Charging a battery (1 Viewer)

beachcaster

Free Member
Dec 18, 2010
3,044
3,161
east sussex
Funster No
14,709
MH
C Class
Exp
a few years
This is not a motorhome battery.....but a small battery pack that powers
a very powerful cree bike light.

I bought the light a while ago and fear I have thrown the charger away
( I know how daft !).

I have a Maplins plug-in charger that allows me to dial in the voltage to charge small appliances....with all the right size plugs etc

But what voltage do I set it to ............the battery pack has a connector
and is described as 8.4 volt .....6400mAh........

so how many volts do I put in when charging.

Yes I know nothing about this topic:Smile:

barry
 

scotjimland

LIFE MEMBER
Jul 25, 2007
2,086
9,024
Suffolk Coastal District, UK
Funster No
15
MH
Timberland
The charging voltage must be higher than the battery voltage to push a current through it ... so I would suggest setting the charger to 9v .. then keep an eye on it, watch how warm the battery gets..
It will get warm, but shouldn't get hot.. If it gets hot, reduce the charging voltage.

Also, most important.. ensure you have the correct polarity .. ie .. + to + ... and NOT + to -

That's my view on it.. lets see what the other leccy gurus say

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beachcaster

Free Member
Dec 18, 2010
3,044
3,161
east sussex
Funster No
14,709
MH
C Class
Exp
a few years
Jusr seen I can buy a dedicated separate charger from the dreaded bay for £7.99

So thats what I've done....should have looked there first really :)

thanks

barry:Smile:
 

pappajohn

LIFE MEMBER
Aug 26, 2007
43,207
48,810
Dark side of the moon
Funster No
172
Exp
Since 2005
Jusr seen I can buy a dedicated separate charger from the dreaded bay for £7.99

So thats what I've done....should have looked there first really :)

thanks

barry:Smile:
and you'll need it too.....

according to the spec it is a 7.4V 4.5Ah lithium-ion battery and will need a special charger


www.magicshinebikelights.co.uk

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beachcaster

Free Member
Dec 18, 2010
3,044
3,161
east sussex
Funster No
14,709
MH
C Class
Exp
a few years
and you'll need it too.....

according to the spec it is a 7.4V 4.5Ah lithium-ion battery and will need a special charger

www.magicshinebikelights.co.uk

Thanks for the comments..........as for the light it is quite stunning
I love my cree torches..........but this light is astonishing I bought it direct from china..though they are easily available in the uk now .Loads of videos about them on you tube....but its somewhere between 900 and 1400 lumens depending who you beleive
and its super bright.

barry:Smile:
 

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