Yamaha TT-R125(W) Owner's Service Manual page 250

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BATTERY INSPECTION AND CHARGING

(TT-R125E/TT-R125LWE)

Since MF batteries are sealed, it is not possi-

ble to check the charge state of the battery by

measuring the specific gravity of the electro-

lyte. Therefore, the charge of the battery has

to be checked by measuring the voltage at the

battery terminals.

Battery cover

2. Disconnect:

Battery leads

(from the battery terminals)

First, disconnect the negative battery lead

1, and then the positive battery lead 2.

Battery charge

Measurement steps:

Connect a pocket tester 1 to the battery

Tester positive probe →

Tester negative probe →

The charge state of an MF battery can be

checked by measuring its open-circuit

voltage (i.e., the voltage when the positive

terminal is disconnected).

No charging is necessary when the open-

circuit voltage equals or exceeds 12.8 V.

battery positive terminal

battery negative terminal

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