Well the problem can be a number of things.
Problems:
1. Your computer may not be connecting to the batteries.
2. May be unlucky and gotten 2 bad batteries
3. Your PC may be rejecting the batteries
4. Your computer may be shorting the batteries upon plug in (VERY RARE)
Why answer queries as if they refer to a computer, when the query concerns a camcorder ?
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SOURCE: Can a lithium ion battery be overcharged?
Here's a small FAQ I found: 1) My lithium ion battery is the SONY NP-FP70 Battery Pack. Does the fact that the battery is called a battery pack mean that it has built in circuitry to prevent an overcharge? No. I write with some authority since I've dissected too many and there is no such circuit in the battery. From a system perspective it doesn't belong there. 2) Is there any way of knowing if my SONY BC-TRP charger has the circuitry for preventing an overcharge? You'll have to ask, but the key clues are: a. The documention tells you to not leave it plugged in overnight. b. The battery gets too hot and melts the plastic. 3) If I charge my battery in my camcorder (SONY DCR-HC40), can I assume it has the built in circuitry to prevent an overcharge? a. One can't assume anything. b. But from what I read on that model, you plug it in and forget about it. To do that, it would have a proper charge circuit.
SOURCE: Draining battery
This camera has had problems with the primary switch block faulting. The camera will power up all by itself when unattended and drain the battery. Another symptom would be the battery refuses to charge fully because the camera must remain in the "OFF" mode for the charge process to begin. Sony in Laredo, TX is replacing these controls at little or no cost, I would call them to see if they will repair this for you. Hope this helps you. Joe Weibel Custom Electronics (customelectronics.org)
SOURCE: new batteries will not charge
a technician ' s adjustable bench power supply - set for 9 volts at 1 amp - for a minute or so , will initialize most new lithium batteries ( a charger update may also be available ) ;
SOURCE: Batteries won't charge?
I would return it and get a new one, and if that doesnt work then buy a different one because these ****. I am stuck with mine, but I wouldnt suggest it to anyone...
SOURCE: Battery life?
Here is a replacement source
The batteries are covered under warranty for three years. Sony batteries are know for not keeping a good charge after a few years.
If there not holding a charge, they wouldn't appear on the LCD screen at all. I the AC power is working fine, then that probably isn't the source for not getting a charge.
You could try lightly scraping the contacts on the battery and see if that makes a difference and recharge them.
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