Brand: OptiMATE Battery Chargers
The Optimate 5 model is a fully-automatic 4-step charger that is suitable for 24/7/365 maintenance of most 12 volt lead-acid automotive or motorcycle batteries between 15Ah and 192Ah capacity. It is ideal for use with deep-cycle batteries such as those in modern cars with "stop-start" systems. The case is sealed against weather (IP54 or higher) so it can be used indoors or outdoors, in temperatures down to -4°F (-20°C).
Just hook it up to your 12 volt lead-acid battery (wet cell, gel cell, AGM or RG type) and forget it! There is never a risk of damage due to overcharging. The Optimate 5 starts with an automatic test of your battery condition. If all is well, the 4-step charging proceeds from Low Volt Start, to Controlled Charge, to Optimize, and finally to OptiMATE Maintenance. If a problem is detected, an additional Pulse Save step works to desulfate a deeply-discharged battery. If you disconnect the battery, the charger will automatically shut down.
The Optimate 5 can save most batteries discharged as low as 2 volts. If the battery is fully charged when the charger is connected, the Optimate 2 will help to compensate for normal power drains by alarm systems, stereo memory, ECU, etc (safe for use on cars with delicate electronics). The 4 Amp constant charging current can charge a 16Ah battery in about 4 hours, or a 180Ah battery in about 45 hours (assuming no other power drain is present).
Operates on 100 - 240 VAC input voltage (50-60Hz). This version has a 6 foot AC supply cord with a 2-prong North American (USA & Canada) plug. Draws less than 0.5W when not connected to a battery (listed by the California Energy Efficiency Commission). Includes clamp-type charging cable and weatherproof ring terminal cable, each with a quick-release 2-pin SAE plug that connects to the 6 foot charge lead on the charger. The charger body features built-in wall mounts.