ORIGINAL: Zeeb I don't mean to barge in on the Hitec support forum, but Mike Mayberry posted on another forum about the new 7XXX series being cleared for unregulated Li-Po/Li-Ion use. I and many others run the Hitecs on A123 systems which don't put out anymore voltage than a freshly charged five cell NiMH/NiCD packs. Alan; could you please verify your answer is Hitec's most current position?
Answers to similar questions by Mike Mayberry on other group:
"Hitec strongly suggests you do not use more than 6.75v to power our servos - Mike". and earlier on this NG :
"So far there have been no reported issues using the A123 batteries without a regulator with our digital servos. - Mike."
Whilst agreeing with Mike, Hitec RCD servo specifications, even for 7XXX series servos, other than for specific Robotics servos, state voltage range 4.8v - 6.0v. e.g. :
HS-7955TG Specifications
HS-7965TG Specifications
HS-7985TG Specifications
Whilst servos may work at voltages above 6.0v. user must be aware that the higher voltage, the higher the heat generated which leads to exponentially reduced life expectancy of the servo by early burn out of board, motor and worn gear train.
Your comment "I and many others run the Hitecs on A123 systems which don't put out anymore voltage than a freshly charged five cell NiMH/NiCD packs" is acknowledged, but be aware that as reported by others on the NGs "Many cell with 123 in their name are in fact nominal voltage of 3.6 / 3.7 and charge to 4.1 / 4.2volts per cell". [FWIW the simplest voltage dropper when using say a 6v SLA (GellCell) is as advocated on the Yacht & Boat newsgroups 2 X IN4001 diodes, each of which create a .6 volt drop putting you well within voltage parameters whilst allowing a 4A current.]
"Mike Mayberry posted on another forum about the new 7XXX series being cleared for unregulated Li-Po/Li-Ion use" Have not received this information nor able to locate such post and welcome clarification.
Regards
Alan T.