I have a lawn edger with an electric start that is powered by 4x sub C nicads. They have died and the charger has long gone missing. A genuine charger costs about $70. Does anyone know, is there any reason I cannot use something like this to charge them?
There are several aftermarket R/C SMART chargers that would be more appropriate. They sense the number and type of batteries and automatically select the charge accordingly. It is important to have identical cells of the same state of charge in a pack.
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Or you could build your own:
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Or modify an existing surplus tool charger;
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If the sub-C's have been down for a while, you may have lost one or more. You may have to replace or repack the battery. It occurs to me that a whole new lawn edger might be had for the same price, but I might be wrong.
I usually don't bother fixing up something like that unless there are enough junk parts laying around so I don't have to chase around for parts and pay top price for whatever I can get to do the job. I have found discount new power tool batteries for defunct or discontinued tools and opened them up to use as replacement cells. Occasionally RS has put R/C packs on sale too.
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