I have an orion touch duo charger that is overcharging by a good bit.. I set 2 cell battery to peak at 8.4 v. On techs volt meter it is reading 8.68 . I get same on MY volt meter.

Anybody else having the same problem?

I think it was an issue prior to the 2.1 patch but should be fixed now I believe.

First question is to check balance connections. Pin it out at the battery, balance port, etc. Use a paperclip, or something small so you can reach in with everything connected. I've had balance cables go bad, and the net effect is the charger seeing a lower voltage than is actually in the battery. Also, had balance wires fail inside the batery.

Did you set the end charge voltage at 8.4v ? The cut off voltage is adjustable.

Most chargers has Balancing Charge. Chargers peak out at 8.4v. I think all lipo's are not equal. It charges to the average of the 2cells. 8.69v for both cells, if you check out the voltage in Balancing mode, 1 cell could read 4.34v the other cell could read 4.05. It'll be the average of to cells total.

If you cycle the pack, it'll even itself out. Most chargers cycle 3 to 5 times charging and discharging, function cam take up to 10hrs or more. I do it 3x every 6- 8 week depending on usage.

Chargers are the same, difference is cosmetically. Function are the same. They came a long way, to keep it safe in the hobby. Good question to ask. Storage of lipo, I think should be taken, store the @ 1/3 the capacity, fully charged and stored could be the problem of puffing up or ballooning.

Be safe!! have fun!!

A correctly operating balance charger controls the voltage of each cell individually. Not the average of the cells. It's the fundamental concept of a balancing charger.

The available lipo chargers vary by far more than cosmetics. There are significant differences in performance, capability, adjustability, etc.

For those having issues, contact service and see if the charger can be calibrated. I know some can be adjusted to get into spec.

Problem persists.... can't seem to get an email back from orion.....

is it the two channel charger? If so, does it happen on both channels? I think the Hitec and Orion touch series chargers are just badged versions of the same thing (i could be wrong).
Swap the balance leads and or balance board/check resistance of them. to eliminate the possibility of that affecting charging.

Also try charging another type of battery and see if the charger voltage/battery voltage are different as per LiPo.

Tried different balance boards, and leads. Does it on both channels.

Also updated firmware.

Oh dear...that's not good news.

Hit the "+" on the main screen, then select charge end voltage, then adjust down and check again after a cycle.

Sorry to bring back an old post,
But mine is doing the same thing. It charged two batteries up to 4.34v/cell.
Called Horizon and was basically told sorry no warranty for Orion.
I said I understand but can I send it in to be repaired.
Sorry, don't repair electronics.
He said especially on older model products.
I said a 1 year old charger at this price should not be considered older.

Any thoughts???

is your charger registered if yes go to team orion.. go thru the steps.. read in past there was a software update and a way to adjust look on youtube

I recently updated my duo touch charger software to V2.8. It is now over charging my batteries. The cells are coming off a 4.28-4.33v. It even puffed one of my newer batteries. I have confirmed that the end voltage is 4.20 and that I am not charging in HVLipo mode.