Question about Sony Handycam DCR-TRV900E Mini DV Digital Camcorder
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Posted on Jan 02, 2017
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.
Posted on Sep 13, 2005
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)
Posted on Feb 15, 2007
2.7 volts is too low. Usually camcorders use battery at least 6 volts. Problems with rechargeables especially NiCds and NiMH, a cell will be shorted. for 6 volts pack, there are 5 cells in series (5 pcs x 1.2 volts with load , 1.35 no load). If you are measuring only 2.7 volts, it is highly possible that 3 cells are dead. As for the charger, if the same charger is used to power the camcorder and you said the the camcorder operates using the adaptor, this means that the charger is OK. You can ZAP the battery back to life but I will not recommend. It can be dangerous. If you can buy the battery, I suggest you do it since the old battery, even when zapped, will not provide enough juice anymore.
Posted on May 22, 2007
This sounds similar to a problem I had. I brought the camera in under warranty and the repair shop fixed it. They shop text is cryptic.
Problem: Camera light keeps flashing, not charge
Solution: Troubleshoot to intermittent switch block control, replace with new one, test OK.
Posted on Apr 24, 2008
Will your camera power on with a spare battery or through the electrical adapter ? If so then your camera is fine and the problem is your battery!
This is why manufacturers always recommend to use the supplied batteries and recommended chargers only and not some third party junk. This is why you have batteries exploding on people they don't read the warnings.
Yes it is possible to damage your battery - perhaps your battery cannot take a charge - it is NOT normal to charge a battery for a week !
your battery needs a nominal voltage to remain healthy if you allow it to drain below that voltage you have reverse polarity and your battery is good for the garbage bin.
use the recommended charger from now on and get new batteries.
Posted on Sep 26, 2009
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