View Full Version : Is my Battery toast ?
Jupiter20060
06-24-2008, 12:09 AM
I have a B400 w/1800 stock eflite battery. The other night I was charging w/stock charger,while I was installing some gear sets. Long story short ,finished with the servos,come in the living room started doing some G3.5 sim. Forgot the Battery was charging. 2 1/2 hrs.:wow2: The charger is a balancing charger.Does this type of charger safeguard against overcharging.This charger does'nt have an alarm like my other one does. Thanks for any advice. Jupiter20060
Does the charger give any indication of when the charge is complete? An LED or something? If so, I would expect that it would terminate the charge.
-Robert
Jupiter20060
06-24-2008, 09:20 PM
yes, all LEDS turn red.
If all the LEDs were red when you pulled if off and those LEDs tell you it is full, you should be ok. You can check the voltage of the cells with a volt meter to verify.
-Robert
bigblackken
06-25-2008, 03:49 AM
I believe there is an issue with the blade 400 stock charger. I've read that it needs very clean DC power. If you are using the AC adapter that is available seperately, I've heard that it isn't good enough. I have the ac adapter and no longer trust it. This first one or two charges went ok, around 1 hour. but after that, it would take hours and still not indicate it was finished. it helps to have a voltmeter to check on your battery. at any rate, i gave it, the stock charger plus its ac adapter from eflight another try a couple days ago. again- no indication it was done after a couple of hours. And on top of it all, it did not charge one of the cells- or charged it so poorly that it read something like 3.78V and the other two cells were 4.15V.
The solution to this is that you must attach it to a clean DC power source (car battery), or a serious ac/dc converter. I read that some ac/dc converters do not provide a very clean dc source. I have the common sense RC voltmeter/balancer (around $40) that i used to balance my packs out.
brettboz
06-25-2008, 04:32 AM
I believe there is an issue with the blade 400 stock charger. I've read that it needs very clean DC power. If you are using the AC adapter that is available seperately, I've heard that it isn't good enough. I have the ac adapter and no longer trust it. This first one or two charges went ok, around 1 hour. but after that, it would take hours and still not indicate it was finished. it helps to have a voltmeter to check on your battery. at any rate, i gave it, the stock charger plus its ac adapter from eflight another try a couple days ago. again- no indication it was done after a couple of hours. And on top of it all, it did not charge one of the cells- or charged it so poorly that it read something like 3.78V and the other two cells were 4.15V.
The solution to this is that you must attach it to a clean DC power source (car battery), or a serious ac/dc converter. I read that some ac/dc converters do not provide a very clean dc source. I have the common sense RC voltmeter/balancer (around $40) that i used to balance my packs out.
I have the problem that the battery (stock blade400 one) is currently at 4.2, 4.2 and 3.7. I have tried balance charging this at normal 1800 and at trickle of 200 neither worked. Im not trying to discharge it via my balancer to see if I can get it back to how it should be.
PS It got this way with the standard stock charger, I now have new Swallow EQ charger / balancer.
Jupiter20060
06-25-2008, 08:11 PM
Yes, I do charge with a fully charged 12 volt battery.I just hope it did stop charging when the red LEDS came on .I havent bought a voltameter yet . You know it charged for 21/2 hrs. It was,nt warm or hot when I unplugged it.It was just as cool.Maybe it will be ok. Thank for any advice, Jupiter20060