Hello! last night i went on a bit experimenting .. i thought the metal frame could short the board in any point leading to the warranty error message, so.. what i did next was to cover the frame with some electrical tape to avoid any undesired metal contact between this latter and the board, then i mounted back the frame in the box case.. well, not such a success like was hoping: i'd say i "pretty randomly" obtained the warranty error message again.. this thing puzzled me a bit... i tried several times mounting and unmounting the frame, *gently adding* some tape on the board itself to avoid other possible contacts.. someway (would like to be more precise than this but at now this variable is beyond control....) i managed to place back the frame, mount back the old battery without having the error message. really wonder why sometimes i got it, other times not.... (anyway at any time i got the message i always read 0V for the overall battery voltage in the Escribe device monitor) so tonight i tried again to fully charge the old battery, which was finally balanced. btw i was scared it could have been damaged or faulty... as somewhere i read the charge current rate should be reduced, in these cases, to avoid battery overheating... i am really new to lipos.... now i really think this battery pack is someway faulty (after only one single charge), as the charge rate (even after pack was balanced) raises and drops very quickly, also the single cells voltage reading raises and drops pretty madly.. good thing the device balancer seems to be correctly working, charging circuit probably too my battery is set to 14.43wh (Hcigar hint) hope it's correct cause i still didn't have occasion to run the battery analyzer tonight later on i will try the new battery pack, we'll see what will happen... in the mean time i opened a support ticket, waiting for the Evolv staff reply.. not redundant to say i *greatly* appreciate your infos and feedback! Thanks, to updfate the forum with my experience Kind regards mark