Discharged two batteries and can't get charged

KCR

Have a 2011 Precedent with 2013 Trojan 8 volt batteries. I had accessories wired to two batteries which I left on and drained the two batteries. How is the best way to try to bring the two batteries back to life?

BGW

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Volt_Ampere

Use an auto charger to bring them back one at a time. Don't leave them on unattended because you can overcharge them with a 12V auto charger. You want to get them back up to were the others are as much as possible before you charge the pack in series.

scottyb

Get yourself a 12v reducer. Battery pack imbalance can be hard to re-level leading to early battery pack demise.

klanel

At work we commonly had 2 12v batteries in series for 24 volts and on occasion when we wired to one battery for a 12v application, it would lead to premature battery failure as you stated. A DC-DC converter will eliminate that issue.

scottyb

It is especially difficult to correctly restore 8v batteries with 12v charging. A reducer would be a good investment but, the reducer has to be turned off when the cart is not in use. Get a reducer with a key switch relay connection and remember to turn the key off when the cart is not in use for best results.