I think this was fairly well covered recently but I am a little bemused by my LB probs. I have 2 large solar panels totalling a nominal 190 watts, which are presently happily producing 22 or more volts/5amps to the 2x110amp Platinum batteries, but recently the 71 litre compressor fridge has been struggling. When it turns on the voltage from the battery reduces to about 12 volts or less, before building back up to 12.5, this is when the solar panels are not in sunlight. If I charge the batteries at night-time with a mains charger, the smart charger very quickly shows that the batteries are fully charged, as does the power monitoring device I have.
I am thinking of taking out the 2 LBs and charging them separately, to see if one has partially failed, therefore limiting the other, or if in fact they have both failed. I would establish this by seeing how long each takes to charge to full.
I have a small Excel meter, but am unsure how to use it to measure the remaining capacity of each battery. It apparently has an ammeter capacity of only 10 amps, unfused, so cannot see how it would cope with a 110 amp battery, or am I misunderstanding this function. How can I establish the remaining capacity, I read about the drop test not really being suitable for the LB.
The batteries are about 3 and 4 years old respectively, so probably not covered by guarantee.
I am thinking of taking out the 2 LBs and charging them separately, to see if one has partially failed, therefore limiting the other, or if in fact they have both failed. I would establish this by seeing how long each takes to charge to full.
I have a small Excel meter, but am unsure how to use it to measure the remaining capacity of each battery. It apparently has an ammeter capacity of only 10 amps, unfused, so cannot see how it would cope with a 110 amp battery, or am I misunderstanding this function. How can I establish the remaining capacity, I read about the drop test not really being suitable for the LB.
The batteries are about 3 and 4 years old respectively, so probably not covered by guarantee.