Off Road

The BST 1000 is a 12V Lead Acid & Lithium Battery Tester that offers a complete testing program including: battery test, charging test, alternator test, resistance test, voltage test and cranking test (CCA- cold cranking amps).

Designed for professionals, the BST 1000 is the perfect so-lution to check the health of your automotive or powers-port battery in a few minutes!
Download printing driver here

Features:
  For Lead Acid (flooded, AGM flat plate, AGM spirale, GEL, EFB) and Lithium batteries
  For all 12V vehicle and motorcycles batteries
  5 battery tests: cold cranking amps, voltage, internal resistance, health, starting
  Vehicle charging and cranking system test
  Easy to read thanks to the large LCD screen
  Print function via PC printer
  Multiple language: English, German, Spanish, French, Dutch, Italian
  Increased power and extended life
  Short circuit and polarity reverse connection protections

Specifications:
  Voltage Test
  Cranking Test
  Alternator Test
  Resistance Test
  Safe
  Multi Language
  Printing
  Data Storage

Get back on the road in no time thanks to our ultra compact and powerful battery jump starter!

The Power Box is versatile to safely jump start battery on all vehicles, charge and recharge USB devices including 3 light modes in case of emergency. Ultra safe, our booster PB 02 is delivered with a smart cable to ensure spark-proof connec-tion and reverse polarity protection. Thanks to a com-pact and lightweight conception, you can easily you
can easily insert your PB 02 inside a motorcycle, trunk, glove box, or adventurer backpack.

Features:
  Compact and powerful booster rated at 1200A
  Suitable for 12V Lead Acid battery only.
  Up to 20 jump starts in one charge.
  Designed for gas (7.0L) and diesel (6.0L) engines.
  Very safe: smart cable with spark-proof connection and reverse polarity protection.
  Power supply for all USB devices when you need them most.
  LED flashlight function with 3 modes.
  LCD display with state of charge indication and output ports used.
  Comes with a storage case, smart jump lead, lightning cable, Micro USB cable, USB C cable, 12V car charger and 12V home charger.

Functions:
  Safe lithium Booster
  Gas engines up to 7.0L
  Diesel engines up to 6L
 
  LED Flashlight
  3 modes – Powerful constant light
  Strobe & SOS

  Power Supply
  USB output 5V 2A for mobile devices
  Output 12V for vehicle products
  Battery charger for mobile devices

Battery Booster For:
  Motorcycle, Scooter, ATV, SSV-UTB, Snowmobile, Watercraft, Lawn & Garden, Car, Boat

Battery Charger For:
  Mobile Devices: Smartphones, tablets, HD action cameras, music players, wireless speakers and more !

BTX24HL/B50-N18L-A/A2/A3 (Y50-N18L-A/A2) battery is a part of our SLA range. Designed to make the user life easier, this 12V 22.1Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX24HL/B50-N18L-A3 battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 21
• Capacity 20hr (Ah): 22.1
• CCA (A): 350
• Polartiy:
• Terminal:
• Dimensions (mm): 205 x 87 x 162

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX20HL battery is a part of our SLA range. Designed to make the user life easier, this 12V 18.9Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX20HL battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 18
• Capacity 20hr (Ah): 18.9
• CCA (A): 310
• Polartiy:
• Terminal:
• Dimensions (mm): 175 x 87 x 155

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX20CH battery is a part of our SLA range. Designed to make the user life easier, this 12V 18.9Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX20CH battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 18
• Capacity 20hr (Ah): 18.9
• CCA (A): 270
• Polartiy:
• Terminal:
• Dimensions (mm): 150 x 87 x 161

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX14HL battery is a part of our SLA Max range. Designed for the most extreme conditions, this 12V 14.7Ah battery offers maximal performance to big engines motorcycles that are equipped with electronic equipments (GPS, Alarm, audio, flashlights...). With specific terminals and reinforced battery case, this battery offers maximum vibration resistance and easy mounting on Harley Davidson motorcycles.

Ready to use, 100% maintenance free and non-spillable, this BTX14HL battery provides increased power, superior capacity and maximum reliability to all heavy motorcycles.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 14
• Capacity 20hr (Ah): 14.7
• CCA (A): 220
• Polartiy:
• Terminal:
• Dimensions (mm): 150 x 87 x 145

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BT9B-4 battery is a part of our SLA range. Designed to make the user life easier, this 12V 8.4Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BT9B-4 battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 8
• Capacity 20hr (Ah): 8.4
• CCA (A): 120
• Polartiy:
• Terminal:
• Dimensions (mm): 150 x 68 x 105

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BB7L-B2 battery is a part of our SLA range. Designed to make the user life easier, this 12V 8.4Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BB7L-B2 battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 8
• Capacity 20hr (Ah): 8.4
• CCA (A): 100
• Polartiy:
• Terminal:
• Dimensions (mm): 135 x 75 x 133

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTZ8V battery is a part of our SLA range. Designed to make the user life easier, this 12V 7.4Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTZ8V battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 7
• Capacity 20hr (Ah): 7.4
• CCA (A): 120
• Polartiy:
• Terminal:
• Dimensions (mm): 113 x 70 x 130

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BB9-B battery is a part of our SLA range. Designed to make the user life easier, this 12V 9.5Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BB9-B battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 9
• Capacity 20hr (Ah): 9.5
• CCA (A): 120
• Polartiy:
• Terminal:
• Dimensions (mm): 135 x 75 x 139

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX7A battery is a part of our SLA range. Designed to make the user life easier, this 12V 6.3Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX7A battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 6
• Capacity 20hr (Ah): 6.3
• CCA (A): 105
• Polartiy:
• Terminal:
• Dimensions (mm): 150 x 87 x 93

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX5L/BTZ6S battery is a part of our SLA range. Designed to make the user life easier, this 12V 5.3Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX5L/BTZ6S battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 5
• Capacity 20hr (Ah): 5.3
• CCA (A): 90
• Polartiy:
• Terminal:
• Dimensions (mm): 113 x 70 x 105

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX4L+/BTZ5S battery is a part of our SLA range. Designed to make the user life easier, this 12V 4.2Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX4L+/BTZ5S battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Cross Reference:

• Yuasa / Top Lite / Katana: YTX4L-BS
• Motobatt: MBTX4U
• Powerroad: YG4L-BS
• USPS: US4L-BS

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 4
• Capacity 20hr (Ah): 4.2
• CCA (A): 65
• Polartiy:
• Terminal:
• Dimensions (mm): 113 x 70 x 85

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX14AHL/BB14L-A2/B2 battery is a part of our SLA range. Designed to make the user life easier, this 12V 14.7Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX14AHL/BB14L-A2/B2 battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 14
• Capacity 20hr (Ah): 14.7
• CCA (A): 210
• Polartiy:
• Terminal:
• Dimensions (mm): 135 x 90 x 164

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BB5L-B battery is a part of our SLA range. Designed to make the user life easier, this 12V 5.3Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BB5L-B battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 5
• Capacity 20hr (Ah): 5.3
• CCA (A): 65
• Polartiy:
• Terminal:
• Dimensions (mm): 120 x 60 x 130

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BB4L-B battery is a part of our SLA range. Designed to make the user life easier, this 12V 4.2Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BB4L-B battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 4
• Capacity 20hr (Ah): 4.2
• CCA (A): 50
• Polartiy:
• Terminal:
• Dimensions (mm): 120 x 70 x 92

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

Mainly developed for warehouses and garages, the brand-new BK 20 is a smart bank battery charger and maintainer, which offers 3 channels of charge.

Rated at 2A per channel, this powerful automatic charger is suitable for lead acid and lithium batteries up to 40Ah. Real 3 in 1 solution, the BK 20 can charge and maintain 3 batteries with different voltage and technologies at once.

Very safe and easy to use, the BK 20 has 10 stages of charge including a new force mode to enhance the performance of all your powersports batteries. Delivered with 3 BS clamps set.

Assembly part for display can be addded in option to mount up to two BK 20 chargers on BS display. Ideal to create a small charging station!

Features:
  Charges and maintains 3 batteries with different voltage and technologies at once
  Adaptable charging algorithm for Lead Acid & Lithium (LiFePO4)
  Easy to use: connect & forget
  Auto detect Lead Acid or Lithium technology
  Force mode: to activate low voltage “dead” Lead Acid battery or wake up “dead” LiFePO4 battery
  Safe: connection spark free, reverse polarity, short circuit and internal overheat protection 

BSLi-03 battery is a part of our LiFePO4 range. Designed for the most demanding riders, this 12.8V 3Ah (36Wh) battery offers maximum starting performance, further safety and higher cycle life. With its ultra-lightweight design, this BSLi-03 battery provides faster acceleration to all powersport vehicles.

Useful, this battery is equipped with a voltage indicator to check the state of charge at any time.

Replacement Conversion from BS Batteriers SLA:

BB7-A, BT7B-4, BT9B-4, BTX7A, BTX9

Specifications:

• Technology: LiFePO4
• Voltage (V): 12.8
• Capacity 10hr (Ah): 3
• Power (Wh): 36
• CCA (A): 210
• Polartiy:
• Terminal:
• Dimensions (mm): 134 x 65 x 92

FEATURES

• Ready to use
• Lighter weight – up to 70% than lead acid batteries
• Multi-positioning mounting – up to 180°
• Extensive cycle life – over 2000 cycles
• Fast charging
• Very safe and environmental friendly
• Very low self discharge
• Can start engines after a long period of storage
• Robust brass terminals
• Heat temperature resistance up to 230 °C
• Waterproof design

UPGRADE FROM:

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BSLi-10 battery is a part of our LiFePO4 range. Designed for the most demanding riders, this 12.8V 7.5Ah (90Wh) battery offers maximum starting performance, further safety and higher cycle life. With its ultra-lightweight design, this BSLi-10 battery provides faster acceleration to all powersport vehicles.

Useful, this battery is equipped with a voltage indicator to check the state of charge at any time.

Replacement Conversion from BS Batteriers SLA:

BTX20L, BTX20HL, BTX24HL, SLA12-19, BTX20L-BS, BTX20HL-BS, BTX24HL-BS, SLA12-19-BS, B50-N18L-A/A2/A3/AT, 51913

Specifications:

• Part Number: 360118
• Technology: LiFePO4
• Voltage (V): 12.8
• Capacity 10hr (Ah): 7.5
• Power (Wh): 90
• CCA (A): 480
• Polartiy:
• Terminal:
• Dimensions (mm): 148 x 86 x 105

FEATURES

• Ready to use
• Lighter weight – up to 70% than lead acid batteries
• Multi-positioning mounting – up to 180°
• Extensive cycle life – over 2000 cycles
• Fast charging
• Very safe and environmental friendly
• Very low self discharge
• Can start engines after a long period of storage
• Robust brass terminals
• Heat temperature resistance up to 230 °C
• Waterproof design
• Spacers to adjust the dimensions if necessary, to make sure new battery can be installed firmly in the battery box

UPGRADE FROM:

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

U1R-9 battery is a part of our SLA range. Designed to make the user life easier, this 12V 28Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this U1R-9 battery offers increased power, extended life and maximum reliability to all powersport & garden vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 20hr (Ah): 28
• CCA (A): 300
• Polartiy:
• Terminal:
• Dimensions (mm): 195 x 125 x 176

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

U1-9 battery is a part of our SLA range. Designed to make the user life easier, this 12V 28Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this U1-9 battery offers increased power, extended life and maximum reliability to all powersport & garden vehicles that require high performance.

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 20hr (Ah): 28
• CCA (A): 300
• Polartiy:
• Terminal:
• Dimensions (mm): 195 x 125 x 176

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

BTX14 battery is a part of our SLA range. Designed to make the user life easier, this 12V 12.6Ah battery is ready to use, 100% maintenance free and completely spill proof.

Extremely simple to install & carry, this BTX14 battery offers increased power, extended life and maximum reliability to all powersport vehicles that require high performance.

Cross Reference:

• Yuasa / Top Lite / Katana: YTX14-BS
• Motobatt: MBTX12U / MBYZ16H
• Powerroad: YG14-BS
• USPS: USX14-BS

Specifications:

• Technology: SLA
• Voltage (V): 12
• Capacity 10hr (Ah): 12
• Capacity 20hr (Ah): 12.6
• CCA (A): 200
• Polartiy:
• Terminal:
• Dimensions (mm): 150 x 87 x 145

Features:

• Wet charged factory activated and ready to go
• Higher life cycle (up to three times longer than conventional batteries)
• Easy to install (no risk of spilling acid)
• Plate sulfation minimized
• AGM construction (absorbed acid)
• VRLA battery (Valve Regulated Lead Acid)
• Sealed, no gas emission through venting hole (under normal operation)
• Increased power and extended life
• Extreme vibration resistance

Find the correct fitment for your motorcycle here: BS Battery Fitment Guide

The BT02 is a battery & alternator tester designed to save time on electrical issues, it gives a instant diagnosis.

With all the features inside an automatic, you cannot use it wrong.

FEATURES

• For 12V battery
• Test the condition of your battery and alternator
• Connect the crocodile clip to battery terminal and check alternator or battery
• Easy to use

INSTRUCTIONS

1. Connect the red crocodile clip to the positive (+) battery terminal
2. Connect the black crocodile clip to the negative (-) battery terminal

Battery Check

• Switch on the vehicle lights for 1-2 minutes
• Disconnect the battery from the vehicle
• Wait 10 minutes
• Connect the tester

Alternator Check

• Run the vehicle with all electrical equipment off (lights, radio...)
• Run the vehicle with all electrical equipment on (lights, radio...)
• The green LED should light on both tests meaning the alternator is GOOD
• A red LED indicates the alternator is over charging : must be controlled
• No LED light indicates the alternator may not be charging : must be controlled