# Dead Shori batteries, bofum! - Page 2 - MVAgusta.net
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Old 05-05-2012, 01:43 PM   #11
adecritten
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Lithium iron phosphate batteries (liFePo3) Btw, I don't put mine on the charger when the bike isn't being used for long periods, I either let them run flat. Or disconnect them. I use quick disconnects.
Good point there!! I'm pretty sure that leaving a laptop constantly on charge will screw the battery much quicker than if you only charge it when required.




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Old 05-05-2012, 04:46 PM   #12
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Mike.. Did you buy the Antigravity bat in the UK ?.. If so, have you got a link ?

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Hi John,

No, it came from the US of A
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Old 05-05-2012, 04:49 PM   #13
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Originally Posted by adecritten View Post
Good point there!! I'm pretty sure that leaving a laptop constantly on charge will screw the battery much quicker than if you only charge it when required.




This is from the Antigravity website:

The Antigravity Battery normal voltage is 13.2v. The battery will read up to 14.7V immediately after charging. The normal operating range will read between 13.3-14.5V. After a few hours it will self balance to the 13.3-7 range which is its normal state of charge. The maximum voltage the battery should be exposed to is 14.7V. On the lower end of the voltage range the battery should be put on a charger if the battery voltage gets drops below the 12.5V range while sitting. The voltage should not be allowed to drop below 10.5V while at rest. Permanent damage will occur at below 10.5 volts..
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Old 05-05-2012, 04:55 PM   #14
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Lithium iron phosphate batteries (liFePo3) are supposed to be good for a thousand charge cycles, meaning that they go from full charge to zero charge a thousand times without dying. These are the batteries used in hybrid cars. I built a battery pack a couple of years ago and have had no issues. I charge it with a standard trickle charger. Having two batteries die seems odd and points to your charger. Btw, I don't put
Mine on the charger when the bike isn't being used for long periods, I either let them run flat. Or disconnect them. I use quick disconnects.
Rob these are LiFePO4 batteries
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Old 05-05-2012, 08:57 PM   #15
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Originally Posted by RobP View Post
Lithium iron phosphate batteries (liFePo3) are supposed to be good for a thousand charge cycles, meaning that they go from full charge to zero charge a thousand times without dying. These are the batteries used in hybrid cars.
A charge cycle doesn't discharge a battery to 0v. It's just going from charged to discharged and back within the particular batterys intended charge range. Even deep cycle batteries are considered fully discharged when they still retain between 20-50% charge.
Lithium batteries in hybrid cars are shallow cycle and don't discharge more than 20% or so,charge before being considered fully discharged.
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Old 05-06-2012, 01:15 AM   #16
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Rob these are LiFePO4 batteries
Sorry working from memory which is a bit feeble. I am referring to a123 cells.
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Old 05-06-2012, 02:00 AM   #17
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Originally Posted by ASSAIL View Post
A charge cycle doesn't discharge a battery to 0v. It's just going from charged to discharged and back within the particular batterys intended charge range. Even deep cycle batteries are considered fully discharged when they still retain between 20-50% charge.
Lithium batteries in hybrid cars are shallow cycle and don't discharge more than 20% or so,charge before being considered fully discharged.
I did not know that. I stand corrected. Thanks, I learned something today . I wonder if my battery is dead, better check.
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