When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a red top in another vehicle thats dead and would not take a charge. Did some research and according to the internet since its always right. Optima has a special charger. But you can and Im going to try to fool the battery by putting the charger on another battery then jumpers to the optima. Supposedly this works. standby...............................
red top is about 5 years so it could be beyond life expectancy anyway but nice to know you can freshen up since many of our trucks sit for extended periods of time.
Some chargers won't initiate without first seeing a certain minimum voltage. Paralleling a charged battery is a work around for this, the 2nd battery can then be disconnected. A "smart" charger with a float charge setting will prevent batteries from self-discharge.
I had my first Optima discharge completely and would not recharge. They sent a warranty replacement and didn't want the old one back.
I hooked the two batteries in parallel and hooked them up to a charger. I now have two good batteries. Although, one has been sitting for a long time since I don't need it at the moment.....