Battery Replacement

[BrianB]

Does anyone know if I can replace a LA640(12v 4A) battery with a RB640B(12V 4.5A) battery, it's for a camping lantern. I connected the battery and it did work but I don't want to damage the lantern.

 

[BCO]

You will be outputting a higher wattage into the bulb (54W as opposed to 48W). Should be critical I think, unless the wiring in the lantern can't handle the extra 0.5A.

 

[Frankie]

Your replacement battery voltage is the same (12v) as the original, but has a high load capacity which means it can supply the lantern's load for a little longer than the original battery.

If the physical size is not an issue, then the larger capacity battery is the way to go.

 

[bekdik]

You will be outputting a higher wattage into the bulb (54W as opposed to 48W). Should be critical I think, unless the wiring in the lantern can't handle the extra 0.5A.

Please explain your logic?

When I studied electricity, wattage was = current x Voltage, which is dependent on the lamp's resistance and not dependent on the battery's maximum current capabilities.

 

[BCO]

Please explain your logic?

When I studied electricity, wattage was = current x Voltage, which is dependent on the lamp's resistance and not dependent on the battery's maximum current capabilities.

You're more likely right than I am... never studied electricity. Also, I meant to type "shouldn't be critical" not "should be critical" for what that's worth.

*edit* @ Frankie, isn't battery capacity measured in Ah not A?

 

[Frankie]

You're more likely right than I am... never studied electricity. Also, I meant to type "shouldn't be critical" not "should be critical" for what that's worth.

*edit* @ Frankie, isn't battery capacity measured in Ah not A?

That's right Amp Hour - I assumed the OP meant that.

 

[BrianB]

Thanks for the help guys.