Optimate DC-DC TM-500 battery charger

General characteristics: CHARGE YOUR 12V – 13.2V BATTERY FROM ANOTHER 12V BATTERY!
NO AC POWER NEEDED.
Recharge the battery of your trailered motorcycle, ATV or powerboat on the way to your destination. OptiMATE DC to DC uses power from your vehicle's battery or an external 12V battery to recover, charge and maintain another 12V – 13.2V battery. OptiMATE DC to DC's long-term maintenance mode is very efficient and protects the source battery, only using it when the load battery needs it. OptiMATE's maintenance mode keeps the battery at full charge, never overcharging, extending battery life and improving battery performance. OptiMATE DC to DC can recover deeply discharged sulfated batteries from as low as 2 volts. Technical characteristics: CHARGING AMPERAGE: 2 A
USE: indoors or outdoors (minimum temperature: –20 °C / –4 °F).
RECOVERY: 2V low voltage start
PERFECT FOR: 12V STD, AGM and GEL batteries and LFP (LiFePO4) batteries from 3 to 96 Ah.
POWER SUPPLY: 12-16V, 2.7A max.
PACKAGING: Splash-proof case with wall hangers, 180 cm (6 ft) AC power cord and 180 cm (6 ft) charging cord with SAE connector. Splashproof battery cable, standard battery clip assembly, and fused battery clip assembly included.
SAFETY: no risk of overload. Totally safe for the electronic system of the vehicle. Spark suppression. Safe for long-term battery maintenance. Automatic shutdown when battery is short-circuited or disconnected. Get all the detailed information here