I think it might be because it's cold here now and the charger compensates for battery temp.
I'll check the controller manual again tho because I thought that voltage was high too. On Thursday, October 2, 2014, Eric Kuhnke via Af <af@afmug.com> 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 <af@afmug.com > <javascript:_e(%7B%7D,'cvml','af@afmug.com');>> 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 >>> >>> >> >
