Review on Waterproof Battery Capacity Indicator Golf Cart Voltage Meter with LCD Display and Green Backlight – 12V, 24V, 36V, 48V – Digital Voltmeter Testers for 2S-15S Lithium Battery and Lead-Acid Batteries by Eric Mueller
However. It was $9.99
Delivery was on time and hooked up to the 12v Li-ion battery in less than 5 minutes. After an hour of use, the device still showed 100% battery, but the voltage dropped from 14.5 to 12.5 and continued to drop rapidly. It was around this time that the battery gauge (finally) started dropping rapidly. The moral of the story is don't rely on the battery gauge, look at the voltmeter. It's far from perfect, but this solution works for me and the price is right.
- Weight
- Expensive
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