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burlmart's avatar
burlmart
Explorer
May 15, 2015

opinion - costco gr 78 batts & parallax 7300 charge data

i have the parallax 7300 converter, two 1 y/o kirkland group 78 batteries (one house that is almost never used but to start genset, and one chassis). after a long day of charging 6 days back with b...
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loneryder's avatar
loneryder
Explorer
May 20, 2015
A simple answer would be to get a new battery tender from WalMart for $20. It's the same one everybody else sells for around $50. It trickle charges at 1.5 amp and then monitors the battery. The new ones are much better with circuits to monitor the battery and not overcharge. I have several and keep them plugged in all the time. Use them on motorcycle, mowers and motorhome.

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