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I've had some old cordless tools where the tool itself has a charger port. I've tried running these while plugged in (but with the battery drained) and they didn't work. That's because the charger...
Answer
#1: Initial revision
by
Olin Lathrop
·
2023-08-29T12:42:02Z (about 1 year ago)
<blockquote>I've had some old cordless tools where the tool itself has a charger port. I've tried running these while plugged in (but with the battery drained) and they didn't work.</blockquote> That's because the charger is designed to charge the battery, not run the tool. The tool probably requires much higher power levels in bursts, whereas charging the battery requires steady controlled power. The power into the battery also varies over the charging cycle. The charger monitors the battery voltage and decides the charging current accordingly. That won't work for running the tool.