Battery and its charger

KAMRANHAFEEZ100

@kamranhafeez100-H4hDdR • Oct 25, 2024

Oct 25, 2024

1.3K

hello to all members,

i have a lead acid battery of 4 volt and .8ah rating i use it to glow led light in case of emergency i want to ask the rating of charger which i use to charge this battery smoothly

thanks in advance

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sauravgoswami

@sauravgoswami-UAfTlI • May 6, 2010

I hope your battery is rechargeable. If yes then you need a step down transformer of 4V and .8amp use a brigde rectifier to convert to DC to charge your battery

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Ashraf HZ

@Ash • May 8, 2010

You should charge a battery with a slightly higher voltage than its rating. I'm guessing your lead acid battery has 2 cells? Around 5V should be alright.

For the charge current.. 200mA should do (granted, it will take a while). Charging at 800mA is quite dangerous!

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sauravgoswami

@sauravgoswami-UAfTlI • May 9, 2010

But chargers are expected to deliver exact voltage rated in batteries and high-end chargers do so too..

ashYou should charge a battery with a slightly higher voltage than its rating. I'm guessing your lead acid battery has 2 cells? Around 5V should be alright.

For the charge current.. 200mA should do (granted, it will take a while). Charging at 800mA is quite dangerous!

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saurabh2486

@saurabh2486-Tr6NOC • May 9, 2010

use around 5 v charger it will work i suppose

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