WEP in AH
WEP is strictly time based, there is no actual temperature function involved (thus there are no tricks to get WEP back quicker, for example by cruising at lower power level).
It's function is defined by Time (=maximum continuous use), Cooldown(=time required to 'recharge' after a single full use of WEP) and Total (= total WEP time per sortie). A F4U for example has 5/10/8, meaning you can use WEP up to five minutes at a time, has a cooldown period of 10 minutes (so 2 minutes of cooldown for 1 minute of WEP used, and a total time of 8 minutes of WEP per sortie. The FW 190D-9 and Ta 152 have (10/5/40), making them the kings of WEP, so to say.
Once your total time is used up, WEP is gone and can not be restored on the rearm pad!
For many years, the Total was broken, so WEP was limited by Time and cooldown only, giving every plane with WEP an unlimited amount of cycles. This was fixed by HT about four years ago. The rearm pad itself had never any impact on WEP