36V "On The Go" Charger | Alternator Charge Box “On The Go” Charger | 12V–36V 10A DC DC Smart Lithium Battery Charger

The LBP Alternator Charge Box “On The Go” Charger is a 12V–36V 10A DC lithium battery charger engineered for safe, efficient replenishment of lithium batteries while on the move. Designed to match the self-discharge rate of your battery system, this smart lithium charger provides low-voltage trickle charging, making it ideal for extended storage and transport without risking battery damage.

Compatible with a wide range of lithium-ion battery banks—especially 36V trolling motor batteries and 12V–48V setups—this charger works seamlessly in marine, camper, off-grid, and vehicle-based systems. It’s compact, rugged, and optimized for battery maintenance in mobile environments, ensuring consistent performance and enhanced battery life over time.

Use it as part of your DC to DC alternator charging solution or as a portable backup to maintain battery health when not in use.

Key Features:

• 10A output (438W) for efficient maintenance charging
• Voltage range: 12V to 36V – compatible with 36V lithium battery systems
• Ideal for trolling motor batteries, marine lithium setups, and mobile solar power
• Lightweight and travel-ready for extended battery storage
• Safe for long-term use with LiFePO₄ and lithium-ion chemistries
• The Smart DC-DC Charger has one outlet for DC 36V 10A batteries

Extensive Electronic Protection:

• Over-temperature protection
• Overcharge protected
• Short circuit protected
• Reverse Polarity protected
• Input voltage protected—Shut down if the input voltage drops below the lock-out value (12.5V DC）

Safety Precautions:

• Read this manual carefully before installing and operating the product. It contains important instructions that must be followed during installation, operation, and maintenance.
• Save these instructions for future reference on operation and maintenance.
• Never use the product at sites where gas or dust explosions could occur.
• Never place the charger on top of the battery when charging.
• Prevent sparks close to the battery. A battery being charged could emit explosive gases.
• Danger of explosion from sparking.
• Danger of electric shock.
• Install the product in a heatproof environment. Ensure that there are no chemicals, plastic parts, curtains, or other textiles, etc., in the immediate vicinity of the equipment.
• Ensure that the equipment is used under the correct operating conditions. Never operate it in a wet environment.
• It is normal for the Smart DC-DC charger to get hot during operation; keep any heat-sensitive objects away and provide proper ventilation.
• For very hot environments, consider mechanical air extraction.
• Avoid covering the charger.
• Refer to the specifications provided by the battery manufacturer to ensure that the battery is suitable for use with this product. The battery manufacturer's safety instructions should always be observed.
• In addition to this manual, the system operation or service manual must include a battery maintenance manual applicable to the type of batteries used.
• This device is not to be used by persons (including children) with reduced physical, sensory, or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction.

Mounting

• Mount on a non-flammable surface with screws. 
• Observe a minimum clearance of 10 cm under and above the product for optimal cooling.
• Mount close to the 12V engine battery, but never directly above the battery to prevent damage due to gassing of the battery.
• The control and indicator panel could be mounted at any convenient area away from the charger.

Charging

• Connect the input power cable with 12V engine battery first, Then connect output power cable with 36V 10A Lithium battery. be sure the polarity is connected correctly.
• Push POWER button, The charger will charge the service battery if input voltage raise up to 13.3V DC, if the input voltage drops to 12.5V DC, the charger will cut off.

Input and Output LED Indicator

• Input and Output Flashing red——input and output connected correct and input voltage is under 13.3V
• Input Solid green and Output Solid red——input and output connected correct and input voltage is over 13.3V
• Input Solid green and Output Solid green ——Charging full

Specifications:

Available now at our lithium battery store in Tampa, FL. Ships nationwide