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Sprint 2 Battery Not Working
#1
I recently purchased a sprint 2 and it works wonderful- most of the time. I bought it with five battery packs, a 7.2v 1800 mAh, 7.2v 3300 mAh, two 8.4v 4500 mAh, and an 8.4v 5100 mAh. They all work great except the 5100 battery. When I plug in and turn on the car it begins to beep and never stops. I thought it might not be charged so I charged it up but it still doesn't seem to work... Any ideas on what might be wrong and how to fix it?

Thanks
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#2
If the battery is new I would exchange it for a different one. Off the top of my head I would say it might have a bad cell. Do you have a meter to check cell voltage? If so check the individual cell voltage they should all be equal within +/- .02 of each other.
Gramps
---------------------------------------------------
Yokomo YD-2
Hpi Sprint 2 Flux 50/50 - Locked rear/Open front
Exceed RC MadPulse

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#3
(02-16-2017, 11:00 PM)Gramps50 Wrote:  If the battery is new I would exchange it for a different one. Off the top of my head I would say it might have a bad cell. Do you have a meter to check cell voltage? If so check the individual cell voltage they should all be equal within +/- .02 of each other.

Unfortunately its not new, I bought it used from someone selling the Sprint 2 and batteries as a package. I don't have a meter but I'll take it to a hobby shop to see if they can check. I'm not too upset if it's unrepairable because the batteries and the car were well under $150, so still a great deal either way. Not to say I'm not bummed though.
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#4
Battery is more than likely
toast my friend. Nothing lasts forever. Especially batteries.


Sent from my iPhone using Tapatalk
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#5
For those who care: the battery was busted, not sure why or how it happened... It would hold a charge but was faulty in how it released or something above my technical knowledge. But I bought a new charger to make sure that wasn't the cause of the jacking up of the battery.
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#6
A good charge is always a good thing to have around. I know it's not always needed but I always balance charge my lipos and I never charge them above 1C. They should also be stored with a storage charge and not stored full or empty.
Gramps
---------------------------------------------------
Yokomo YD-2
Hpi Sprint 2 Flux 50/50 - Locked rear/Open front
Exceed RC MadPulse

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#7
(02-21-2017, 09:10 PM)Gramps50 Wrote:  A good charge is always a good thing to have around. I know it's not always needed but I always balance charge my lipos and I never charge them above 1C. They should also be stored with a storage charge and not stored full or empty.

Would running lipos be better than NIMH? I currently only have NIMH but might look into lipos if its worth it. I don't suppose old airsoft lipos would work???
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#8
(02-22-2017, 04:15 PM)snakenator Wrote:  Would running lipos be better than NIMH? I currently only have NIMH but might look into lipos if its worth it. I don't suppose old airsoft lipos would work???

For drifting I don't think it really matters. My Exceed MadPulse came with a NIMH and it works just fine. I would think as long as your NIMH are the correct voltage for your esc you would be fine. When replacing them I would get lipos. I personally like SMC lipos from http://www.smc-racing.net.

Don't know what type of lipo a airsoft uses so I couldn't say.
Gramps
---------------------------------------------------
Yokomo YD-2
Hpi Sprint 2 Flux 50/50 - Locked rear/Open front
Exceed RC MadPulse

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