richard_syko
Banned
Registered: 17th Dec 03
Location: Newport, Wales
User status: Offline
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Dont mean to sound dull as Foook, but whats the third connection for on a mobile battery?
 
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Corsa^Dan
Member
Registered: 4th Dec 02
Location: Sleaford, Lincolnshire
User status: Offline
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hmm good question i no some have 4... but thats 2 pos and 2 neg.
Mayb 2pos and 1 neg :/ and they link bk somwhere
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Tim
Site Administrator
Registered: 21st Apr 00
User status: Offline
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Usually batteries have more than two connections because they're 'smart' batteries.
Three pin batteries are usually a one-wire bus which communicates with a chip in the battery which tells the charger the chemistry of the battery so it can apply the correct charging algorithm.
Also allows the phone to monitor the state of health of the battery. This used to be easy as the voltage drops as the battery is run down. The only trouble is the newer Li-Ion batteries hold their voltage right up until their dying days, and so the phone needs a sensor in the battery to tell it how much charge is left.. 
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Ste
Premium Member
Registered: 5th Mar 03
Location: Taif, Saudi Arabia
User status: Offline
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geek
I would rather lose by a mile because i built my own car, than win by an inch because someone else built it for me.
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James_DT
Member
Registered: 9th Apr 04
Location: Cambridgeshire
User status: Offline
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Yes, I was about to suggest that actually.
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leeshez
Member
Registered: 3rd May 01
Location: Great Harwood, Lancashire
User status: Offline
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All i know is that if you put your tounge on a PP 9V battery it tingles, so having 3 it might give off a dam good belt.
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Corsa^Dan
Member
Registered: 4th Dec 02
Location: Sleaford, Lincolnshire
User status: Offline
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fone batterys r much less than 3v
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Corsa^Dan
Member
Registered: 4th Dec 02
Location: Sleaford, Lincolnshire
User status: Offline
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9v even
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