Originally Posted by
Plutonix
I had some NiMH packs to old lights that I reworked to run my pair of Dinottes. I really like the simplicity and generic nature of AAs, but also like the longer runtime with NiMH packs (~ 4.5 hours). The only connectors I could find were simple 9V style clips, not the cabled kind like on the light head. So they are a bit more fragile and less weather resistant, but it is also cheap and easy to replace them as needed.
If I were building up a pack instead of reusing/reworking packs, I might use NiMH D (or F) Cells and run both lights off 1 pack for less weight and more runtime. Maybe add an extra connector for charging so the light heads never have to be disconnected.
The problem *I* have with "too much" runtime is that I could get spoiled as to how often to recharge them, then forget and end up in the dark.
It might not be as cheap as you think, though. The mainstream battery manufacturers don't make real "D" size rechargeables. If you find them, look at the mAh rating - the batteries from the major manufacturers have the same capacity rating as their AA cells (2500mah, typically).
In order to get a "real" D size rechargeable, you have to buy a different brand. I found Maha D sized batteries (11,000 mah) on amazon at $30 for 2, so $60 for 4. In addition, you'll probably have to buy a new charger because your current charger probably only charges AA and AAA cells.
I'm just saying I had the same idea, but it seemed like it might end up costing just as much as simply buying the lithium ion version of the light, which comes with 2 batteries plus the charger, even counting in that eventually the battery will wear out and you'll have to buy new ones, the replacement D cells might be the same price as the replacement lith-ion pack.
P.S. I ran across these on amazon -
http://www.amazon.com/Tenergy-10000m...6318394&sr=1-1
10,000 mah (rated, at least) from "Card Tenergy" for $13 for 2, so $26 for 4. Have never heard of "Card Tenergy" before though, while Maha is a reputable manufacturer. A few good reviews though.