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Old 10-13-2016, 10:08 AM   #16
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You guys may say that I'm nuts but whenever I have my packs at home they are discharged a full race amount and I put them in the refrigerator. No puffed packs since I started doing this little ritual.
-This is my routine too ...so I guess I am also nuts!
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Old 10-13-2016, 02:49 PM   #17
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You guys may say that I'm nuts but whenever I have my packs at home they are discharged a full race amount and I put them in the refrigerator. No puffed packs since I started doing this little ritual.
If I start storing puffed batteries in the frig, will the swelling go down?
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Old 10-13-2016, 02:57 PM   #18
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it will go down but it will swell back up when you use them.. once they puff, they will never go back to normal.
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Old 10-13-2016, 03:07 PM   #19
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As much as possible, get a serious charger: icharger, Thunderpower, etc... Cheap chargers will puff your lipos quick...
I had the gen1 mrc chargers with no storage mode, and no balancer puff my Maxxamps packs in a week: $700+ down the drain....I only use these chargers for nimh packs...
Racers that only have these old chargers need to get an external balancer, and always balance charge to 8.4volts at 1C max(or at a rate that does not overwhelm the balancer) or to 7.7volts for storage in addition to balancing after disconnecting the charger to the pack until the balancer fully equalizes the cells... It can be a pain sometimes, and will take alot more time than using a charger with all the balancing+storage built in....lol...
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Originally Posted by OttoKrosse View Post
Been using an ORCA Infinite HV 6200mah 100C for over a year and a half, charging at 40 amps and discharging at around 30 amps and storage voltage at around 7.7 at at room temps....zero puffing, just bought 2 more....need I say more?

Edit: Charger is an I-charger 406 Duo

Last edited by bertrandsv87; 10-13-2016 at 03:21 PM.
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Old 10-13-2016, 03:23 PM   #20
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How do you balance charge a 1s pack? I have a Hyperion EOSO 720i Net 3 charger.
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Old 10-13-2016, 03:26 PM   #21
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How do you balance charge a 1s pack? I have a Hyperion EOSO 720i Net 3 charger.
you dont
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Old 10-13-2016, 03:32 PM   #22
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LOL....
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How do you balance charge a 1s pack? I have a Hyperion EOSO 720i Net 3 charger.
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Old 10-13-2016, 03:56 PM   #23
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I am not sure why our Lipos are so dang sensitive, it seems like every other Lipo on the market (and they are now in everything from laptops to cameras) doesn't have any problem with being neglected. Maybe it's the capacity and the harsh use cycle, who knows?
At least it's not as bad as the exploding Samsung Galaxy Note 7 fiasco.
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Old 10-13-2016, 07:18 PM   #24
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How do you balance charge a 1s pack? I have a Hyperion EOSO 720i Net 3 charger.
You can't balance it (what would you balance? It only has one cell!).

But if you use that in saddle packs, you need to balance them as a pair, otherwise one pack will have more charge and will have to "support" the other one in use.

You balance them by connecting them together when charging, just like normal multi-cell packs, jump wire to midpoint plug.
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Old 10-14-2016, 10:27 AM   #25
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Originally Posted by niznai View Post
You can't balance it (what would you balance? It only has one cell!).

But if you use that in saddle packs, you need to balance them as a pair, otherwise one pack will have more charge and will have to "support" the other one in use.

You balance them by connecting them together when charging, just like normal multi-cell packs, jump wire to midpoint plug.
Technically most 1s packs are 1s2p, meaning there are 2 cells wired in parallel to achieve additional capacity instead of additional voltage. Because the two cells are wired in parallel they are self-balancing. While you can't "balance" a 1s pack per se I have found that by using the balance port while charging a 1s battery that it charges quicker, puts in more mah and the end voltage is slightly higher. Not all chargers have this "1s balancing" capability.
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Old 10-14-2016, 11:48 AM   #26
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Originally Posted by biz77 View Post
Technically most 1s packs are 1s2p, meaning there are 2 cells wired in parallel to achieve additional capacity instead of additional voltage. Because the two cells are wired in parallel they are self-balancing. While you can't "balance" a 1s pack per se I have found that by using the balance port while charging a 1s battery that it charges quicker, puts in more mah and the end voltage is slightly higher. Not all chargers have this "1s balancing" capability.
Some chargers use the balance port to facilitate a 4-wire (Kelvin) connection to a 1s pack. This keeps the charge wire resistance from affecting the voltage reading during charge, which gives the results you describe. It's not balancing the cells, but it is still quite useful!
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Old 10-14-2016, 12:08 PM   #27
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Use hardcase packs. The hard case keeps puffing to a minimum by constantly exerting pressure on the gas to dissolve back into the electrolyte.

By the way, high-discharge batteries will wear out faster. 100C seems very high. Have you tried a lower-C battery to determine if your lap times increase? I bet they won't.
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Old 10-14-2016, 12:13 PM   #28
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Originally Posted by bertrandsv87 View Post
Cheap chargers will puff your lipos quick...
I had the gen1 mrc chargers with no storage mode, and no balancer puff my Maxxamps packs in a week: $700+ down the drain....
MaxAmps will puff on any charger. Overpriced and overrated batteries.

The worst thing you can do to any LiPo is overdischarge them. Make sure you have a LVA or LVC on your vehicles and set them to 3.6V per cell. And stop driving when they kick in.
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Old 10-14-2016, 01:08 PM   #29
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Heat is the biggest enemy. I have bought brand new packs during the hot summer and received them puffed in the mail, still sealed in the package.
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Old 10-14-2016, 03:20 PM   #30
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Heat is the enemy....
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