The OptiMate TM-291 is the ultimate professional-level high-efficiency diagnostic Charger & Tester for Lithium batteries and is a must have if you are running an antigravity battery! Perfect for charging and seasonal maintenance.

Charge, Test and Maintain 12V Lithium Batteries
Ideal for LiFePO4 (LFP) 4s 12.8V/13.2V batteries from 2 to 100Ah
5 Amps of charge current
10-Step program

Special Features

Battery SAVE mode with BMS reset: starts from 0.5V with continuous monitoring / testing of charge acceptance or bad / shorted cell condition. Unnecessary (and unsafe) charging of a bad battery is prevented.
SafeTº: Automatic charge rate adjustment to ambient temperature sensed at the charger. Reduced charging below freezing, no charging if temperature is below -20ºC/-4ºF (can damage lithium batteries).
Ampmatic: Microprocessor adjusts current to ideal LiFePO4 charge curve to match battery size / condition, for fastest and most complete charge. Protection against incorrect voltage selection : With 16V selected and a 12.8V (4s) battery is connected OptiMate 7 LFP Select will immediately warn that a low voltage is sensed and then not proceed to charging. USER must confirm the nominal voltage of the connected battery is 16V (5s) before SAVE mode activates. During SAVE mode the charge curve is tracked, if the battery appears to be less than a 5-series 16V battery, it will stop charging.

Details

Ideal for: LiFePO4 (LFP) 4s / 5s batteries from 2.5 – 200Ah.
Charging Amps: 9.5A @ 12.8V / 7.5A @ 16V (AmpMatic).
SAVE: Low Volt Start of 0.5V + 3-step low volt SAVE and TEST.
USE: Indoor / Outdoor (lowest temperature: -4°F / -20°C).
INPUT: Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed.
STYLE: Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector. Weatherproof battery lead & standard battery clip set.

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OptiMate TM-471 Lithium Charger 0.8A

OptiMate TM-291 Lithium Charger 5A