Unknown asked in Science & MathematicsEngineering · 6 months ago

# How much volts are required to charge my 12v 4ah bike battery using DC to DC power booster?

### 9 Answers

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• 5 months ago

13.2-13.8 V DC Min1 Amps Current capacity or more

• 5 months ago

What is the brand and model # of the battery?

Look it up online and it will tell you the C rate.

A typical charger for a sealed lead acid (SLA) battery is 13.8>14.5 V @ 500mA. This will mean a charge time of ~ 4 hours.

A DC to DC converter is not the way to charge it. Are you trying to charge it from another battery?

• 6 months ago

It all depends upon what type of battery is used. For example, a lead-acid battery that provides 12V, has 6 cells. Each cell provides approximately 2V. For lead-acid batteries, it's roughly 2.2 Volts per cell charging Voltage, or in this case 13.2V. The charger must have more Volts than the battery so the electrons flow to the battery. Using a DC to DC power booster probably won't work. It's not designed to be a battery charger. Sure, it will put some charge into the battery, but you will run the risk of and exploding battery from over charging.

• roger
Lv 7
6 months ago

If you are using 12 volt lead acid then you need 14.6 volts.

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• 6 months ago

Depends on the battery (chemistry and type), depends on the booster and depends on how much time you have.

Details, please.

• Marty
Lv 6
6 months ago

about 14.6 V DC

• 6 months ago

If you are seriously interested in doing it right, then read this:

https://batteryuniversity.com/learn/article/chargi...

• 6 months ago

depends on the type of battery and the type of charge controller you are to use.

You can't just connect a voltage to a battery without a charge controller in between to control the current, otherwise the battery will be over charged and damaged.

In general a good charge controller will take any voltage and convert it internally to the proper voltage. A not so good one will require an input voltage some level above the battery voltage, perhaps 2-5 volts above.

edit: what you didn't ask about is the current level needed, which is important. 4 amp-hour, if you want to charge it in 4 hours, you need a 1 amp source. Of course the charge controller has to have that capacity also.

• 6 months ago

High voltage rock & roll

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