Actually, the higher value NiMH rechargeables rarely get the maximum charge value. A typical 2700 mAh cell may typically get only a 2500 mAh charge. A lot depends on the quality of the charger and the optimum recharge current/time profile for the cell. A poor quality charger on a 1hr charge may only give the 2700 mAH cell around 2200mHA charge. A 30 min charger may only give 1800 mAH. The Eneloops charge recorded on my charger were freakily accurate at 2000 mAH plus or minus 5 or 10 mAH.

I've found that Eneloop cells are currently the best on the market, outperforming even the higher rated cells when taking everything into account. Only when using other high quality and higher capacity cells such as Duracell, Ansmman, Uniross or Sanyo 2700 Industrial cells hot of the charger in high drain applications such as digital cameras etc will the Eneloops be bettered. For use in flashlights and GPS applications etc the Eneloops are excellent and will perform better than even top quality single use alkalines.

I've also tried cheaper NiMH cells, an example would be a cheap 2500 mAh no name, it would only charge to 1600 mAh. I suspect your 3800 mAh cells would not be able to hold anything more than 2000 mAH.