If these boats had electric motors and were regularly recharged, it would be a different conversation.It's also pretty outdated, being a 2011 article. For house batteries, they're barely necessary if the cost is factored into the application. It's a long read, but this should be a consideration-įor cranking, they're not really necessary. Most likely will be replacing them this winter or next winter. ChargeEX has a lifetime warranty against failure, but not wear of batteries, while Antigravity has a 10 year warranty.īattery on our boats are starting to show signs of lower capacity, which is why I have been looking into lithium alternatives. ChargeEX is a bit cheaper than Antigravity for the same capacity but doesn't have the reserve feature. Antigravity batteries are interesting but expensive they have a feature that automatically shuts off the battery when a threshold is reached but reserves enough power to start an engine (not needed for non-starter batteries). They're not designed for starting cars, and the relatively low peak discharge current ratings reflect that. Sure, they're about 4-8 times the cost right now of an equivalent size lead acid battery, but they have 5-10 times the cycles, 3-5 times more power per cycle, and can be depleted to near zero without being damaged.ĭon't get any of the Amazon batteries.

I would make the suggestion of switching to lithium batteries, particularly if you plan on keeping the boat for a while.

Interstate battery