2 2s=1 4s ?
09-26-2010, 10:41 AM
#46
While you can do this, be aware that if one pack is discharged more than the other, there will be additional time during charging to bring them into balance. A downside of series charging if the packs aren't used together.
09-26-2010, 10:58 AM
#47
Food for thought:
If you plan on running indoors only 5800mah packs are overkill. The heats and mains are only 5 minutes. You're packing more weight around the track than you need to. Save a buck and look at packs at or under 5000mah or trade Mah for a higher C rating...specially if you're running mod. Seriously, on 4500 you can probably run both heats and the main on one pack with a 15-20 minute charge before the main. The 4s 5000+ packs are great for outdoor 8th e-buggies though. Not sure what your fleet looks like.
The risk of shorting is reduced if you plug the first batt into the negative side of the harness first. Study the harness and try to wrap your head around the circuit...try to see which plug will be on the negative side and use that pigtail first.
Added you to AIM.
If you plan on running indoors only 5800mah packs are overkill. The heats and mains are only 5 minutes. You're packing more weight around the track than you need to. Save a buck and look at packs at or under 5000mah or trade Mah for a higher C rating...specially if you're running mod. Seriously, on 4500 you can probably run both heats and the main on one pack with a 15-20 minute charge before the main. The 4s 5000+ packs are great for outdoor 8th e-buggies though. Not sure what your fleet looks like.
The risk of shorting is reduced if you plug the first batt into the negative side of the harness first. Study the harness and try to wrap your head around the circuit...try to see which plug will be on the negative side and use that pigtail first.
Added you to AIM.
09-26-2010, 11:46 AM
#48
Those adapters you have should work fine with your charger as long as the balancer plugs are compatible. There are two types of balancer plugs...JST (Align, Hyperion and most other commons) and TP(Thunder Power). Here's a pic so you can see that it's pretty straight forward. Pairing just tricks the charger into thinking it's a single pack.
Yeah, if you're using the packs as singles just charge them as singles. There's no time advantage to charging in pairs (only large banks of batteries with a charger and PSU that can push lots of amps) when you consider the extra balancing time. Ultimately you still have to put X milliamps back in to each pack no matter how you choose to do it. If you can just go up to 2C if you wanna speed up charge times... at the cost of less pack life and more heat. I only have a few packs of each cell count so I just keep it simple. This stuff spins my head a little and it's just not worth the hassle for me.
Last edited by makaluch; 09-26-2010 at 12:21 PM.
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