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Charging rotary battery


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Finally got round to buying a magnet and just realised I don't have a charger, then I remembered I had something in shed, the one I have got says the following on back-

Output - 12v 2.7ADC (4A rms)

Minimum capacity 20Ah

 

The battery is a lead acid 12V 7Ah.

 

I don't think I can use it but thought I would ask before a trip to Argos.

Thanks in advance as usual gents.

Al

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Trying to charge it with anything more than a trickle charger will indeed "fry it" and probable cause a fire. Your best bet would be to look for a trickle charger suited to your battery, one that when charged will show you by changing the led colour etc. look on ebay as this is where I bought mine.

The majority of chargers for motor bike batteries will be what you want and in most cases an over night charge will be needed then top up once a month if not used.

Remember a batteries life will be greatly extended if kept in a fully charged state.

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Finally got round to buying a magnet and just realised I don't have a charger, then I remembered I had something in shed, the one I have got says the following on back-

Output - 12v 2.7ADC (4A rms)

Minimum capacity 20Ah

 

The battery is a lead acid 12V 7Ah.

 

I don't think I can use it but thought I would ask before a trip to Argos.

Thanks in advance as usual gents.

Al

 

Rule of thumb for PB (lead acid) is to only charge at 10% of the batterys amps. I charge my 12 v 7ah at 0.7amps. It is possible to increase the charge rate but this will reduce the batterys life. Also recharge asap after use and don't drain it to death :) I personally use a Lipro Pro plus for charging, loads of features and will balance charge lithium bats aswell.

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Trying to charge it with anything more than a trickle charger will indeed "fry it" and probable cause a fire. Your best bet would be to look for a trickle charger suited to your battery, one that when charged will show you by changing the led colour etc. look on ebay as this is where I bought mine.

The majority of chargers for motor bike batteries will be what you want and in most cases an over night charge will be needed then top up once a month if not used.

Remember a batteries life will be greatly extended if kept in a fully charged state.

 

All my batteries are kept on trickle charge, exept if I am away from home on holidays etc. They are kept in my shed, and I sometimes connect the chargers to timers, so that they get a trickle charge of about 2 hours everyday.

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  • 2 weeks later...

Quick question chaps, will the trickle charger charge a battery from flat?

 

I've been charging mine on a car charger and I think I may have killed a brand new battery (instantly saying its charged) then flat straight away!

 

I do have a Deben small charger that came with a air rifle tracer lamp that can do 6/12 volts and I believe that may be a trickle charger.

 

Would that be better?

 

Many thanks,

 

Liam

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Finally got round to buying a magnet and just realised I don't have a charger, then I remembered I had something in shed, the one I have got says the following on back-

Output - 12v 2.7ADC (4A rms)

Minimum capacity 20Ah

 

The battery is a lead acid 12V 7Ah.

 

I don't think I can use it but thought I would ask before a trip to Argos.

Thanks in advance as usual gents.

Al

I use an old mobile phone charger that goes in the cig lighter in my car, cut the end off fit two small crockodile clips and bobs your uncle :good:

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