There's pressure inside the body of the light, probably from a battery venting. I would definitely throw out the batteries ASAP to prevent damage or further pressure buildup.
Both NiMH and lithium-ion are 2200mAh, so the only advantage of lithium-ion is weight. In terms of cycles, NiMH should end up being more durable and you don't need to worry about them degrading over time when sitting unused.
The charger is just a power supply, the electronics are inside the...
SureFire is still making R1 batteries, the item number is 24132 or R1BATTERY-R. It is now 3450mAh, up from 2900mAh, but you can only order it from customer service.
If you search for the model number of the battery charger (PB02LF-SUFR), you'll see Harding Energy Inc. show up.
Since the new batteries have even less capacity, I would assume that the reason for switching suppliers is either product availability or branding. I can't imagine they would be too...
If anyone's curious how the current SureFire lithium iron phosphate 123A performs, there is indeed less capacity compared to the K2 Energy ones (these were the ones SureFire used to sell around 2012/2013). Due to rounding, all of the ANSI FL1 runtimes ended up being the same, but you can see the...
Has Jim been around lately? I think he has both and would be able to give you a definitive answer.
I'm sure you could find something to do with an EB2C. ;)
Sorry, I wasn't paying attention and thought this was the EB1 thread. The EB2T head does not work in dual-output with a clicky switch, though I don't know if the reverse is true as I don't have a EB2C.
You need to look at watt-hours for the comparison to be even slightly meaningful (and even then, discharge characteristics and circuitry differences still haven't been accounted for).
AAA Eneloop: 1.2V 800mAh = 0.96Wh
AA Eneloop: 1.2V 2000mAh = 2.4Wh
CR123: 3.0V 1500mAh = 4.5Wh
If the Sidekick...
Another thing to keep in mind is the spacing between output levels - medium mode on the Titan Plus offers a better tradeoff between output and runtime. On the Titan-A, high mode has short runtime and low mode is not very bright.
The standard/steady charger outputs 180mA, which would be less than 0.1C. Slow charge is not necessarily a good thing for lithium-ion, unlike NiCd/NiMH, and can cause more wear.
Unless weight is a concern, the lithium-ion doesn't offer any capacity advantage over NiMH and has a lower cycle count. I would recommend OEM NiMH as they don't degrade over time like lithium-ion.