Venom pro charger false peak

[rider618]

Anybody else have this same problem? My venom pro charger always false peaks my batteries. I just add up where they leave off till it equals the batt. Capacity. Any experience and what is everyone's opinion on this charger? I like that it has so many different connectors and it does nimh lipo life etc. But wish it wouldn't false peak. I have a 3s 2200mah maxamps lipo that I've never used. Would a false peak and then start the charge over again be bad for lipo ?

[Maxx_Savage]

Lipos don't false peak like nimh often does. If a lipo doesn't want to start charging there's a too low voltage detected on one (or all) of the cells. Check your LVC and all connectors. Lipo might be bad too.

[Charlie-III]

Rider, I'm guessing it's not a false peak, you're hitting the 120 minute (2 hour) time limit. This can happen with smaller packs during a balance charge, so it's easier to do with a larger pack & balance charge.

And no, it's not harmful to the pack to do 2 charges back to back.

PS, we have 3 of these chargers, no false peaks but occasionally hit the timer.

[Trubble]

Seven LiPos over the last 2-3 years, I can't ever remember having a false peak on LiPo. I'll assume you're either (as Charlie said) hitting the timer, or false peaking on NiMh/NiCad.

Originally Posted by rider618

I just add up where they leave off till it equals the batt. Capacity.

For NiMh/NiCad, you'd be better off going by temperature. Once those batteries are full, they'll typically shed off any excess electrons as heat radiation. If you're getting a lot of false peaks, check for a localized hotspot somewhere in the pack. False peaks are usually your first indication you may have a cell going bad (sulfating or shorting internally).

For LiPos, go strictly by voltage. Individual cell voltages should never, ever exceed 4.2 volts. And there should be zero heat during charging.

[rider618]

Thank you everybody for the good in formation. My lipo batteey ismt false peaking. I haveent ever charged it . I was just expecting it to false peak when i did charge it because i thouggt if was a charger issue. Good to know it wont though.

[Charlie-III]

Originally Posted by Trubble

Seven LiPos over the last 2-3 years, I can't ever remember having a false peak on LiPo. I'll assume you're either (as Charlie said) hitting the timer, or false peaking on NiMh/NiCad.



For NiMh/NiCad, you'd be better off going by temperature. Once those batteries are full, they'll typically shed off any excess electrons as heat radiation. If you're getting a lot of false peaks, check for a localized hotspot somewhere in the pack. False peaks are usually your first indication you may have a cell going bad (sulfating or shorting internally).

For LiPos, go strictly by voltage. Individual cell voltages should never, ever exceed 4.2 volts. And there should be zero heat during charging.

+1.....

NiCD/Nimh was, "Charge to peak, hit a few more times to get the entire pack warm JUST before a race!" A warm battery gives MUCH better performance initially (it's a chemical reaction to release power), thus the "warmth thing".

LiPO is a slightly different animal...... it does not tolerate heat as well as the "older chemistries".

Yes, a "hot cell" in a NiCD/NiMH pack means it's ready to die, time to break out the soldering iron.

PS, rider618.......how the fawk do you say it's "false peaking" if you've never charged it?????!!!!!!!

[SMR 510RR]

What is this guy talking about?

[Charlie-III]

Originally Posted by SMR 510RR

What is this guy talking about?

I (east coast), you (west coast) have no clue....maybe someone from the midwest knows??


Maybe a clue here??...... no torque at all

"Is it bad if the pack shrinkwrap is split???"

[rider618]

Charlie I never said my lipo was false peaking. I said my nimhs were. I said I figured it was a charger problem and I assumed that when I do charge my lipo for the first time, I assume it will false peak. I think the battery got so hot from charging that it got brittle on cool down and then split.

[Charlie-III]

Originally Posted by rider618

Charlie I never said my lipo was false peaking. I said my nimhs were. I said I figured it was a charger problem and I assumed that when I do charge my lipo for the first time, I assume it will false peak. I think the battery got so hot from charging that it got brittle on cool down and then split.

Re-reading the posts, I don't really see where you say NiCD/NiMH false peaking, but you have comments on the LiPO in the 1st post.

Thanks for clarifying. Do you have a temp probe for the charger? I know mine do, use that as well to help prevent overcharging the pack.

No, it's not an issue to charge a pack multiple times, basically just hit "start charge" again just to be sure it's full.

What charge rate do you use? I typically just use "1C", thus a 2200mah pack charges at 2.2Amps, a 1300mah pack charges at 1.3Amps.
I use 1C for all my chemistries.

[rider618]

I charge all my batteries at 3.5 amps. I have always thought a slower charge would be a better charge but maybe since my nimhs are 5000's, maybe 3.5amps is too slow. Maybe that's why my batteries are getting so hot. I have heard of that too.....what you do....2200 mah/ 2.2 amps.......3500 mah/3.5 amps....etc

[Charlie-III]

Originally Posted by rider618

I charge all my batteries at 3.5 amps. I have always thought a slower charge would be a better charge but maybe since my nimhs are 5000's, maybe 3.5amps is too slow. Maybe that's why my batteries are getting so hot. I have heard of that too.....what you do....2200 mah/ 2.2 amps.......3500 mah/3.5 amps....etc

There is really no "too slow" a charge other than the time it takes.