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