Zetor PRIMO HT 20 NC, Operator'S Manual, Page: 107 / 134

Recharge
1. Turn the ignition switch to the 'OFF' position and disconnect the battery from the tractor.
2. Recharge the battery in a well-ventilated area.
3. Charge the battery in the normal way, do not use fast-charging.
4. Turn the charging switch to the OFF position and connect correctly the cables to the negative and
positive terminals of the battery.
5. When using the charger, the charging current should be less than 10 A.
Starting with an External Battery
Warning:

Do not forget to connect the positive terminal first and connect the negative terminal to the
engine body of the tractor with the discharged battery.
1 - Negative (-) Terminal (Black)
2 - Positive (+) Terminal (Red)
PRIMOHT20NC_0108
1. Turn off all electrical equipment.
2. Use a jump lead to connect the positive terminal of
a normal battery to the positive terminal of the
discharged battery.
3. Use a jump lead to connect the negative terminal of
the charged battery to the tractor engine body of
the tractor with the discharged battery.
4. First start the engine of the vehicle with the charged
battery.
Then start the engine of the tractor with the
discharged battery.
5. When the engine is started, disconnect the
negative terminal first.
Then disconnect the positive cable.
6. Charge the discharged battery after starting the
engine for approximately 30 minutes.
PRIMOHT20NC_0109
MAINTENANCE
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