markmud
Self Reliant Diver--On All Dives.
I'm not sure if this will help but the battery cap does not need to be tightened down to seal. It will seal if only screwed in. Just barely snug it if at all. This may help with the issue of damaging the slot.
Hello Ray again,
Shearwater stated almost exactly what you wrote, here it is:
"Accepted battery types The Shearwater Perdix can accept a wide variety of AA sized batteries. The Perdix can accept any AA sized (or 14500 size) battery that outputs a voltage between 0.9V and 4.3V.
Reinstalling the battery cap. It is very important that the battery cap O-rings are clear of dust or debris. Carefully inspect your O-rings for any debris or damage and gently clean. It is recommended that you lubricate your battery cap’s O-ring on a regular basis with an O-ring lubricant compatible with Buna-N (Nitrile) O-rings. Lubricating helps ensure that the O-ring seats properly and does not twist or bunch.
Insert the battery cap into the Perdix and compress the battery contact springs. While the springs are compressed rotate the battery cap clockwise to engage the threads. Be sure not to cross thread the battery cap’s threads. Tighten the battery cap until snug and the Perdix powers on. Do not over tighten the battery cap.
NOTE: Battery cap O-rings are Type 112 Buna-N 70 durometer"
This answers the question about deforming the slot (not directly) and battery types that are compatible with the Perdix.
thanks,
mm