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is this a way to charge a 12v battery ??
jakemuk
Posts: 973 Forumite
if i have a 12v power supply can supply amps later,
and i connect it to a battery and leave it will it charge it in theory ?
realy need charge an old motorbike battery but cant afford a charger in all honesty
and i connect it to a battery and leave it will it charge it in theory ?
realy need charge an old motorbike battery but cant afford a charger in all honesty
Wannabe DFW NERD: Not fully fledged member yet !
HSBC Bank Charges Reclaim In Progress Total: £1462.56
HSBC CC Reclaim Total: £180.00 PAID IN FULL
HSBC Bank Charges Reclaim In Progress Total: £1462.56
HSBC CC Reclaim Total: £180.00 PAID IN FULL
0
Comments
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It is worth making sure that current is not too high (for both the power supply and the battery). *AFAIK* optimal charging current (A) should be about 1/10 of the battery capacity (Ah), i.e. for 55Ah battery current should be about 5A.0
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so 2amp on a 12ah batteyr is ok ?Wannabe DFW NERD: Not fully fledged member yet !
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Current flow will be determined by the receiving battery's internal resistance.grumbler wrote:It is worth making sure that current is not too high (for both the power supply and the battery). *AFAIK* optimal charging current (A) should be about 1/10 of the battery capacity (Ah), i.e. for 55Ah battery current should be about 5A.
Typical voltage O/P's for a car battery charger are 13.8V float and 14.4V boost.0 -
the battery i av is 12v 12ah
adaptor using to charger 12v 2ah ?Wannabe DFW NERD: Not fully fledged member yet !
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If it's a Lead Acid type it's best to trickle charge it at .5A. It will be fully charged in 24Hrs. If you charge it too quickly the lead plates will buckle from the heat and ruin it.0
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if i brought a new battery do they come charged or flat ?Wannabe DFW NERD: Not fully fledged member yet !
HSBC Bank Charges Reclaim In Progress Total: £1462.56
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Why not put the battery on the bike, bump off if need be then go for a ride and let the bike charge it up?
This is assuming that you do have a bike.On the internet you can be anything you want.It`s strange so many people choose to be rude and stupid.0
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