Battery Charging - Yamaha EF3000iSE New Model Manual

Battery charging

I Conditions of use of the DC power supply (exclusively for charging 12V battery)
The DC power supply is designed to charge a battery of 40AH which is half discharged.
12V battery
The time taken to charge a battery depends on how the battery is discharged. Charging is complete when the
specific gravity of the battery is 1.26-1.28. Check the specific gravity in every hour or so.
A 40AH battery of a compact car which is half discharged will be charged almost fully in about 3 hours. Be
sure to check the level of the electrolyte.
Do not take energy from the battery nor run the starter when the battery is being charged. This could cause a
large current to flow through the generator coil, burning it.
I Precautions for charging the battery
The battery will produce a flammable gas. The wrong handling might result in explosion or serious injuries.
Be sure to observe the following when charging a battery.
1) Keep fire and electric sparks away. Explosion might happen.
2) Secure a good ventilation where the battery is charged. Otherwise explosion might happen.
3) Be very careful to handle the electrolyte (diluted sulfuric acid). It will burn anything, so keep it away from
your eyes, skin and clothes.
First-aid procedures: If your skin or clothes catch the electrolyte, wash them with a great amount of water
I Charging a 12V battery
Do not use for other than charging a 12V battery.
Q WARNING:
9 When handling a battery, keep good ventilation and keep electric sparks, like from short-circuit,
away. Also keep fire away. Explosion might happen because a flammable gas occurs from the bat-
tery.
9 The battery electrolyte is diluted sulfuric acid. Remember that, if it comes to your eyes or skin, the
affected part will be burnt. If it should happen, wash the part with much water for at least 15 min-
utes and consult the doctor immediately.
9 Before charging a battery, remove all cords connected to the battery, doing it first from the negative
side. When reconnecting, do the positive side first. If you do the wrong way, short-circuit could result.
immediately. If it enters your eyes, wash with a great amount of water and consult
the doctor immediately.
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