mrc 989 and hyperion lba10

i searched for a while and could fine the info i was looking for so here it is

#1)is this hoodked up right for charging with the balancer

#2)is it set up properly to charge 2s lipo with 5ah packs, besides not having a plug for pack,


#3)is the amp setting right

just a few to get this thread going, ill post all questions about this combo and any charging ? i have in the future

[squeeforever]

1. It appears to be setup correctly
2. Same as above
3. The amperage should be 1C which for a 5000mah pack, would be 5 amps, not 1 amp. That is only .2C

ok , thanks alot just new to this electric, so im trying to learn as much as possible, dont want to ruin the batterys, and i didnt get much out of the instructions that mrc provides, thanks again

[squeeforever]

No problem.

[jnev]

I plan on running this exact set up very soon. So, from what it looks like, you will be balancing and charging at the same time? Let us know how it works for you...

Thanks

charged thru balancer and worked great , still charging but im at 1 hour and 4ah (only charging at 4 amps instead of five) , is this slower than charging w/o balancer then balancing when charged? or is this the prefered safe method, thanks

just finished, it took like 72 min and ended up at 8.42v and 4660 mah, guess i drained that 5ah a little to much, do these #s seem right?

[BrianG]

Charging through a balancer will only take longer if any cells have to be balanced because it does place a small load on the high cells. And the LBA10 seems a tad sensitive so it balances more often. However, the load the LBA places to balance is relatively small and should not affect charge time too much (maybe 30 seconds) unless charging lower capacity cells.

BTW: Those numbers seem fine to me...

thanks brianG , just finished pack #2 and a 5 ah pack that started at 6.9 is at 8.25 and it took 4900mah, is that mean its a good pack? also do any of you let it sit and trickle charge? or is it not worth the time ,thanks for the help

[BrianG]

NP.

By tricke charge, do you mean the CV stage? It does add some Ah into the cell so I would keep doing it.

The starting voltage of 6.9v seems good. It's probably a little lower right after a run, but it drifts back up and that number looks fine. If you discharged deeper (NOT recommended), you'd probably be charging closer to 5Ah back into the pack.

oh ok, yeah with my charger (mrc989) when its done it goes into a trickle mode , next time ill let it go , and maybe charge at 1c instead of less(4amps), should help shorten the charge cycle alot

[neweuser]

Well, trickle charge is like a cycle, it'll discharge and recharge if I'm not mistaken...I would not recommend it personally. I never let it trickle. Trickle charging I thought was more for NiCd batts or Nimh to cycle them....but not sure

[BrianG]

It could simply be the CV phase newe.

Most Li chargers charge at CC until the pack reaches 4.2v/cell, and then switches to CV until the current drops to a low value.

[neweuser]

Not sure, I'll have to read the manual again. But with mine, the volts reach 16.8 or something with 8100 almost of mah, then goes to trickle automatically, so I take it off at that point.

EDIT: ok, after re-reading the manual, you should let the charger trickle charge the lipo. Sad thing is, i always stopped it before that! OOPsss, maybe I'll get more of a punch with a full charge! LOL

[MetalMan]

There's no need to keep the battery on the charger after the CV phase (once it has reached 4.2v/cell). The extra runtime gained from the next phase isn't that much, maybe a couple minutes (depending on total runtime). Punch would likely not increase, since punch is a function of the cells' resistance and their temperature.