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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Ride-on toys kill motorcycle battery - why?
Hello,
Like a lot of people, we have run across a few of those "Hot Wheels" powered cars that use a pair of sealed lead-acid (Type H) batteries, in good condition but the batteries are shot. The batteries are puny and expensive (around $20 even at Wal-Mart). So, I got to thinking: a motorcycle battery HAS to have a better Amp-Hr rating than that thing. I picked up a brand new motorcycle battery for 20-something at the local Sam's Club, charged it and plunked it in. WOW! the thing ran better than ever and went quite a while between charges. The kids loved it!!! Trouble was, after 10 or so charge/discharge cycles, the run time per charge started diminishing and after a while the battery wouldn't even take a charge. It didn't seem to be running hot or anything. Electrolyte level was fine and everything, too. Charge current didn't exceed 2 amps or so. The same thing happened twice, both with a Barbie two-seater "Jeep" and a "quad." I am confused. I don't think surge current is an issue, as their primary function is to send a massive bolus of current to a starter motor. Perhaps I exceeded some sort of "continuous current draw" rating? I have an electricity/electronics background, but batteries are not my forte'. I would really like to know what caused the motorcyle batteries to die so I can avoid this problem later. I really don't want to buy those puny overpriced batteries if I can avoid it. I am wondering, should I go one battery size up (perhaps a lawn tractor battery?) The battery compartment would probably accommodate one of those, but it is too small for an auto battery. (Wishfully thinking I could put a deep-discharge RV battery into it! Wouldn't that be something! (grin)) Thanks much for any information! -------------------------------------------------------------------------------------- Doug the Desert Tripper - Exploring Southern Cal deserts and the Net since '94 www.geocities.com/destrip *Replace 'see-below.no-SPAM.net' with 'dslextreme.com' to email me.* -------------------------------------------------------------------------------------- .. |
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