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Tao Tao 125D Voltage at battery

Old 04-15-2019, 12:46 PM
Weekend Warrior
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Default Tao Tao 125D Voltage at battery

I recently purchased a tao tao 125D atv. After 30 minutes of riding I heard a loud pop from under the seat. I took off seat to find the battery acid cover had popped off and all acid had boiled away. I checked voltage at battery and read 16.5 volts when rpms were at riding level. This seemed way high to me so i though the voltage regulator was bad so i bought a new one and replaced, but still reading 16.5 Volts when rpms are up. After idling for about 2 minutes you could hear the battery boiling. What else could cause this high voltage at battery?
Old 04-16-2019, 02:13 AM
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Someone else on here had the same problem, don't think they resolved it. Some bikes just have a rectifier, so whatever voltage the alternator puts out is converted to DC and shoved into the battery. Most have a rectifier/regulator which converts to DC and controls max voltage down to 14.5v. The other poster tried several "regulators" from Tao-Tao and all were producing more than 14.5v so either they are just rectifiers or Tao-Tao has bought a batch of crap regulators.
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