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Ihave a 220d charger that puts out 10amps per bank. it is a 2 bank charger. On the one bank the red an green lights flash together. It is out of warranty. So my question is will the good bank charge 2 27series bats overnight.? my plan is to use the positive from the charger to 1 bat an the negative on bat 2 with the normal parallel jumpers in place. Whats your ideas? Thanks Im sure Cane Pole or Cat Fan will have a answer. Thanks
Did you try swapping the leads and see if the problem follows? It could be a bad battery.
What Bill said.
Flashing red and green on your charger means it's taking so long to charge that the charger thinks the battery is bad. Swap the leads and see if the problem moves.
Already did that . It stays with the same bank, So back to original question. Will it charge 2 27 series
I charge 2 of the 29s off one 10 amp lead. Works great for me. Hope that helps.
You got 10 amps per hour of charging capacity. If have a 100 amp battery that is completely drained it would take 10 hours to fully charge it. There is some variations in this due to temperature and state of battery, etc, but the above is a good reference point. So if one if for the TM and other the start battery, most likely the TM battery is the most discharged so I would start with it and hope you can get it fully charged with enough time to boost up the start battery. If both batteries are TM batteries and are pretty well discharged, it will likely take about 20 hours to get them both back up 100%. It all depends on how far down they are to start with.
You can also hook up a a parallel set of leads and charge them both at the same time but it is still a function of how much they are discharged to start with.