wait, that copy and paste was from a very small battery, the charging rate is obviously wrong, but voltage remains the same. from a powersonic 12V 100Ah AGM battery:
Cycle Applications: Limit initial current to 20A. Charge until battery voltage (under charge) reaches 14.4 to 14.7 volts at 68°F (20°C). Hold at 14.4 to 14.7 volts until current drops to under 1A. Battery is fully charged under these conditions, and charger should be disconnected or switched to “float” voltage. “Float” or “Stand-By” Service: Hold battery across constant voltage source of 13.5 to 13.8 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition On Thu, Oct 2, 2014 at 4:17 PM, Eric Kuhnke <[email protected]> wrote: > 60V seems high, copied verbatim from the datasheet for a typical > powersonic 12V AGM battery (12V): > > Limit initial current to 1.2A. Charge until battery voltage > (under charge) reaches 14.4 to 14.7 volts at 68°F (20°C). Hold at 14.4 to > 14.7 > volts until current drops to under 50mA. Battery is fully charged under > these > conditions, and charger should be disconnected or switched to “float” > voltage. > “Float” or “Stand-By” Service: > Hold battery across constant voltage source of > 13.5 to 13.8 volts continuously. When held at this voltage, the battery > will seek its > own current level and maintain itself in a fully charged condition > > > > so multiply by four, 14.4V x 4 = 57.6V max voltage at absorption charging > > or 14.7V x 4 = 58.8V > > > > On Thu, Oct 2, 2014 at 4:11 PM, Bill Prince via Af <[email protected]> wrote: > >> Many new solar controllers will let you program the absorption voltage. >> We just started using an MPPT controller from Midnite solar, and all the >> different voltages are programmable per the battery manufacturer's >> specification. >> >> bp >> >> >> On 10/2/2014 12:50 PM, Sean Heskett via Af wrote: >> >>> Hi Gang, >>> >>> We have a 48Vdc Solar site that the solar charge controller when it goes >>> into absorption mode the battery array voltage exceeds 60Vdc. However we >>> have some equipment that doesn't like more than 60Vdc. >>> >>> What product are you using to supply a clean 48Vdc (no more that 300 >>> Watts is needed) >>> >>> Thanks! >>> >>> -sean >>> >>> >> >
