Get a desulfator. They’re cheap now online; you don’t even have to build your own anymore. I’ve successfully rescued several knackered batteries with mine. I’ll warn you it does take several days of doing its thing to restore the cranking amps on a battery but if it’s dead just due to neglect and sitting there discharged it usually works.
@[email protected] I got the Rocket going, needed a new battery … again … because I neglected the battery I bought last year … again.
Get a desulfator. They’re cheap now online; you don’t even have to build your own anymore. I’ve successfully rescued several knackered batteries with mine. I’ll warn you it does take several days of doing its thing to restore the cranking amps on a battery but if it’s dead just due to neglect and sitting there discharged it usually works.
@[email protected] Lithium battery that I bought last year, getting it warrantied.