Balance Charger for lipo used to charge AAA's?
So the purpose of a balance charger for lipo's is to charge each lipo cell individually. This is basically what I've seen people do with the Hitec X4, charge each AAA cell individually.
Since your average lipo balance charger is setup to already do this, with some fancy wiring to a balance tap you should be able to charge AAA cell individually. Anyone tried this yet? Or am I completely nuts? |
I think technically yeah, you can do this, but a Lipo pack balancer also requires the balancing circuitry to have access to each individual cell in the pack. Unless you hook up an AAA pack to have both charging leads and balancing leads, you can't actually do any of this balancing magic. By the time you do, you might as well have bought a Maha or Lacrosse charger that will just do all four AAA's separately, lol.
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True, but the MAHA charger doesn't really do that well for peaking packs.
I've seen people modify the PN charging tray to use the Hitec 4x charger to charge each cell individually. This is pretty much the alternative I'm looking at if I can't get the balance charger thing to work out. My charging practice would probably be, charge the cells on the MAHA charger, then just before my run, re-peak the cells on the "good" charger. |
My guess is you can't. Lipo charges use CC-CV to charge batt's instead of only CC and delta peak. So basicaly, the charger is programmed in a different way, and tries to keep the cell's balanced at a higher voltage.
The idea is good, but modifying a li-po charger is just insane. That is unless you have a lot of electronics knowledge and nothing better to do :D I would sugest you just get a Lacross/MAHA. Also, look into the Spintec ICC charger. Although designed with sub-c packs in mind, It's a high end charger that does exactly want you're proposing ;) |
I think that charger is basically 4 nimh chargers in one and each charger charges one cell on the tray. I can't believe you use a balancing tap on a nimh.
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Balance charging is not the ideal way to charge a NIMH.
You want to use a peak detection charge..... Here is the problem with a peak detection charge in a group setting (coventional charging tray) the group of 4 will only be charged to the peak capacity of the weakest individual cell.... Now if your using matched packs there is no problem until age and use creep on the cells.... By using an individual charger like the maha or lacrosse or a multi charger (hitec,etc..) you can group your individual cells into matched packs by sorting similar numbers. The multi charger shines because you can adjust settings to suit a racing type of scenerio. (more amperage charging and discharging) I did not take a conventional charging tray and modify it instead I made up 4 charging trays.....using a single aaa battery holder from Newark Electronics. |
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Why not just get the c9000? You can charge each battery at different settings and you get to see its current charge level and voltage. No one at our track has any issues with maha chargers and I would love to see your proof as to why "the MAHA charger doesn't really do that well for peaking packs." |
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I have seen some high end chargers that can charge cells individually that cost a lot...the space is an issue but I still think one is still competitive if they just do regular battery maintenance and don't charge at extremely high rates.. peak 900's and trp "750s" charged at 1 amp and peaked at 2 amps is still good for 80t stock :p
When you first came to ILR, I ran my "normal" 80t in mod class running peak 900 cells with above charge rates.....I felt that keeping a tighter line is more important that throwing money at a setup that can get pricey and takes up a lot of space (wires, power supply, charger, trays) vs a maha c9000 or 8 cell charger. |
Lipo charger will definitely not work for nimh cells.. as z3zinho said the spintec ICC will work for this.. AAA's are pretty close to the same length as sub c's so it shouldnt take much to make it work. IIRC the spintec will discharge as well so its 2 birds with one stone.
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Thanks for the info...and I'll see you tomorrow John.
Good stuff though. Thanks! |
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can i then using a c9000 then use another charger to peak it off? say using a lipo charger? |
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Charging batteries can be an art and mastering how to do it can be challenging......:cool: |
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