All things being equal, yes, 370 hours. 3700maH is pretty good. Dippy will no doubt say "serve you right" for the following, but I recently bought two different brands of NiMH batteries off ebay, both rated at 2500mAh. One really was 2500mAh. And one was 800mAh.
If the capacity is real (and it probably is), then the self discharge etc may well be better too. NiMH technology is moving ahead at present. The only problem is how to catch the fakes.
One wonders whether this could be a useful picaxe project - an amp hour measuring system for batteries?
Note: It may or may not be a fake. Many NiMh's need a good long trickle charge the first time or so to attain full capacity. On a new battery, the sophisticated chargers, which are based on changes in the charge rate, are set for normal, used batteries. As I understand it, a brand spankin' new battery will spoof the intelligence into thinking more has been put in than has and cause an early shutoff. If you have not trickle charged the first time, sometimes running a few discharge/recharge sycles (many smart chargers can do this) will ease it up to full capacity.
I have seen 2000mAh batteies, new from a reputable distributor I use (
batteryspace.com), take as little as 100mA, or even less in charge and quickly die. Then, after cycling a few times, take a full charge.
We use these a lot in RC Model Warship combat for smaller ships due to the increased power density. For larger ships (like the 6 foot battleships), we just use SLA's for ballast and get electricity as a happy byproduct.
Cheers,
Wreno