Extremely poor battery life after a few runs
11-05-2015, 06:14 PM
#1
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Extremely poor battery life after a few runs
Hi. I'm having issues with my HSP Destrier. I've had it for a few weeks, the battery charges. But it lasts about a minute before it dies. This is after about 6 hours of charge time. It's LiPo. Is it an issue with the charger, the battery or the car? Please help. I've used it about 7 times.
11-06-2015, 01:56 AM
#2
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From the very brief information you gave, it's hard to say.
First running lipos to below 3.2v per cell will cause premature failure.
I have no idea what you are using for a charger. The cheap chargers often included with ready to use models are often questionable as to how well they work.
Six hours to charge is often indicative of a cheap low power charger. Lipo's generally are fully charged in an hour or less on an appropriate sized charger.
The web information on this model lists NiCad batteries, which are quite different from Lipo's. Six hours might be within reason for NiCads.
First running lipos to below 3.2v per cell will cause premature failure.
I have no idea what you are using for a charger. The cheap chargers often included with ready to use models are often questionable as to how well they work.
Six hours to charge is often indicative of a cheap low power charger. Lipo's generally are fully charged in an hour or less on an appropriate sized charger.
The web information on this model lists NiCad batteries, which are quite different from Lipo's. Six hours might be within reason for NiCads.
Last edited by chuckk2; 11-06-2015 at 02:03 AM.
11-08-2015, 05:49 AM
#4
I'm only guessing at what charging platform came with the OP's model, but something like ?...
This type of charger is what came with my ZD Racing truggies. I have never attempted to use this type of charger as I use basic 80w copies of iMax's B6AC chargers, but as long as the charger that came with your RC has something to sense the different cells voltages, they should work. I can't remember the mah output of my chargers; I do know that they were less than 1 amp and that would be about right for a 6 hour charge time.
I would suggest at least getting a low voltage alarm/battery voltage tester(s) :
These will allow you to check each cell's voltages.
This type of charger is what came with my ZD Racing truggies. I have never attempted to use this type of charger as I use basic 80w copies of iMax's B6AC chargers, but as long as the charger that came with your RC has something to sense the different cells voltages, they should work. I can't remember the mah output of my chargers; I do know that they were less than 1 amp and that would be about right for a 6 hour charge time.
I would suggest at least getting a low voltage alarm/battery voltage tester(s) :
These will allow you to check each cell's voltages.
Last edited by RustyUs; 11-08-2015 at 06:39 AM. Reason: wording
11-21-2015, 05:15 PM
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Best guess is you are killing your batteries in one or both of two ways.
1. Never discharge a LiPo cell below 3.4V under load (3.7V at rest).
2. Never leave a LiPo fully charged for any significant length of time. When not in use LiPo's should be stored a about 3.85V/cell.
May I suggest you read this:
http://www.tjinguytech.com/charging-how-tos
There is a wealth of information on the care and feeding of LiPo batteries there.
May I also suggest you get a charger that can properly charge your batteries. It should have a display that will tell you charging current, pack and individual cell voltages and the mAh returned to the pack during the charge.
The Hobbyking Accucell-6 is an inexpensive example.
Glen
1. Never discharge a LiPo cell below 3.4V under load (3.7V at rest).
2. Never leave a LiPo fully charged for any significant length of time. When not in use LiPo's should be stored a about 3.85V/cell.
May I suggest you read this:
http://www.tjinguytech.com/charging-how-tos
There is a wealth of information on the care and feeding of LiPo batteries there.
May I also suggest you get a charger that can properly charge your batteries. It should have a display that will tell you charging current, pack and individual cell voltages and the mAh returned to the pack during the charge.
The Hobbyking Accucell-6 is an inexpensive example.
Glen
11-26-2015, 09:55 AM
#7
Senior Member
"I am thinking it is the charger though. I'll check that when I can."
It's certainly possible.
unfortunately, the symptom you mention also can be caused by a bad cell.
A multicell Lipo (unless it has an internal electronic protector, ) needs to be charged with
a balancing charger,
It's certainly possible.
unfortunately, the symptom you mention also can be caused by a bad cell.
A multicell Lipo (unless it has an internal electronic protector, ) needs to be charged with
a balancing charger,
