1. In winter, when a large load is placed on the battery, for example, when starting the engine from a cold state, and also when most of the electrical equipment is constantly turned on, it would be useful to periodically fully charge the battery from an external source, at a current of 3.5 to 4 Amps.
2. Continue charging the battery at this amperage until the specific gravity of the electrolyte remains constant over a period of 4 hours.
3. Alternatively, you can use another charger, charging the battery at 1.5 Amps overnight.
4. Special high-speed charging devices, with the widely advertised ability to bring the battery into full working condition in 1-2 hours, are not recommended, since they can cause serious damage to the battery plates due to overheating.
5. When charging the battery, pay attention to the fact that the temperature of the electrolyte should never exceed 38°C, and also remember that a gas containing hydrogen is formed in the cells, and this gas is flammable and explosive, so do not smoke or use an open flame near top of the battery.
6. Please note the restrictions regarding charging batteries that do not require electrolyte topping, described in Section 3.
7. Always disconnect the positive battery cable before connecting the battery to the charger.
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