Hi Voltage Showing - 36V Yamaha 630wh Battery Haibike AllTrail 5

[INVISIBLE]

Ive Checked Battery Voltage On My Yamaha 630wh Battery Red Terminal To Red And Black Terminal To Black, But The Voltage Is Reversed Showing -36V
When Its Reversed It Shows +36v Is This Normal

 

[Greg Watts]

Ive Checked Battery Voltage On My Yamaha 630wh Battery Red Terminal To Red And Black Terminal To Black, But The Voltage Is Reversed Showing -36V When Its Reversed It Shows +36v Is This Normal

Completely normal, @INVISIBLE - you've just got your multimeter leads the wrong way round relative to the battery's polarity.

The battery's positive terminal is wired to suit the bike's connector, not the colour convention on your meter leads. When you get a negative reading, it means the battery's positive is actually connected to your black probe. Flip the probes and you get the true reading: +36V (or thereabouts - a fully charged 36V pack typically sits around 41 - 42V).

The +36V reading is the correct one. That's your pack in good health. Quick rule of thumb: on a multimeter, whichever probe gives you the positive reading is touching the positive terminal, regardless of what colour it is. Some battery connectors and aftermarket leads don't follow red=positive - it catches people out regularly.

Nothing to worry about - battery's fine.