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View Full Version : Regular vs. Maintenance-Free Batteries


Steve(CO)
03-13-2001, 08:10 AM
This was buried in another post and I haven't had any responses, so I'm reposting by itself.

I read that regular maintenance batteries (add water type) are superior to sealed, maintenance-free batteries. It was claimed that the regular batteries are antimony-lead whereas the sealed batteries are calcium-lead and that the latter do not fully recharge after discharge. In other words, each time you recharge, the sealed battery will only recharge to, for example, 98% of the original capacity. The next time you only get 98% of the 98%, etc. This does not bode well for useful the life of a battery. My question is, IS THAT TRUE? The issue was being presented on behalf of a battery additive product which, of course, can't be used in a sealed battery.

I have been trying to decide between the Trojan 225 and the Stowaway Tournament. The Stowaway is sealed which I like because I know I don't check battery fluid level as regularly as I should (personality defect). On the other hand, the Trojans sound like great batteries from various comments on this board. If the bit about charging sealed batteries is true, this will make my decision easy. Thanks for the help.