Brand: OptiMATE Battery Chargers
The Silver Series Optimate5 AmpMatic dual-voltage model is a selectable, automatic 7-step charger that is suitable for 24/7/365 maintenance of just about any 6 volt or 12 volt lead-acid automotive or motorcycle battery between 12Ah and 120Ah capacity.* It is sealed against weather (IP54) so it can be used indoors or outdoors, in temperatures down to -40°F (-40°C).
Just hook it up to your 6 volt or 12 volt lead-acid battery (wet cell, gel cell, AGM, RG, deep cycle, or SLI/starter-type) and select the battery voltage. There is never a risk of damage due to overcharging. Like all Optimate chargers, the AmpMatic starts with an automatic test of your battery condition and voltage. If all is well, the 4-step charging proceeds from AmpMatic Charge, to Optimize, then Test (checking if the battery will hold a charge), and finally to OptiMATE Maintenance. If you disconnect the battery, the charger will automatically shut down.
The Optimate AmpMatic can save most batteries discharged as low as 0.5 volts. If the battery is fully charged when the charger is connected, the Optimate will help to compensate for normal power drains by alarm systems, stereo memory, ECU, etc. The 3 Amp (6V) / 4 Amp (12V) maximum charging current can charge a 6V, 96Ah battery or a 12V, 67Ah battery in about 24 hours (assuming no other power drain is present).
Operates on 100 - 240 VAC input voltage (50-60Hz). This version has a 6 foot long 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.
* OptiMate rates this charger for occasional use on batteries from 3Ah to 120Ah (160Ah for 6V). The more conservative recommendation above is based on using the charger for 24/7 maintenance.
