I’ve currently been testing the CR2, which has a 300 mAH capacity. (Interesting that the descriptions say 3 V, when in fact, these might damage equipment that runs on 3 V primary’s.) SureFire SFLP123 3V Lithium 1550mAh 2 Pack Battery (note the capacity is wrong there) I have the following battery holders on order to make this easier.īattery Enclosures SMT BATTERY HOLDER CR123Aīattery Enclosures SMT BATTERY HOLDER CR2ĬR2 Rechargeable Battery and Charger 15270 3.0V Battery I jerry-rigged a way to attach clip leads to the battery using a paper clip and rubber bands. There should still be some usable energy in the battery before it gets down to around 2.5 V - 2.8 V, etc.Įast Tester ET5410 Single-Channel Programmable Electronic Load 400W Under those conditions, I should be completely safe putting the rechargeable battery in the light or laser. The battery must not creep above 3.30 V, not even to 3.31 V. So, my intention is to either discharge a fully charged LiFePO4 battery to EXACTLY 3.25 V - 3.30 V, with 10 mV accuracy or to charge a discharged LiFePO4 battery to this voltage. Since these primary batteries may routinely be 3.3 V out of the box, I have to assume that the lights and lasers will handle 3.3 V without a problem. I measured some of my own primary batteries and got 3.25 V for a CR123A and 3.29 V for a CR2.
I’ve read anecdotal evidence of the voltage sometimes being higher. From research, I’ve determined that CR123A primary batteries come out of the box with a voltage of 3.0 V - 3.3 V (according to a Duracell spec sheet). I also know that they stabilize to around 3.34 V. I know that LiFePO4’s come off the charger at around 3.7 V. Streamlight docs and tech support don’t recommend rechargeable’s and are no help. I know primary’s can be had for $ 1-2 each, but bear with me. For non training use, I may revert back to the primary batteries. I wish to be able to use these devices for training purposes with rechargeable LiFePO4 batteries. I also have the following laser which uses a CR2 battery: I have the following weapon lights which use CR123A primary batteries: I’ve read threads on forums such as this and others. I’ve been reading many dozens of articles and watching dozens of videos. I have an issue I’ve been researching for a week via Google, DuckDuck Go, Brave Search. I did read the sticky in this forum category of CR123A rechargeable replacements. I try to share any useful info I’ve found that might be helpful to others. This gets a bit long but please bear with me. Just recently discovered this forum and joined.
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