7.2 V Ni Mh Rechargeable Battery

[1.2 V] The Panasonic Eneloop Rechargeable Ni-MH Batteries last a long time between charges. Plus, they don't leak like many single-use batteries do.

[NiMH] I have used several major brands of Ni-MH batteries and eneloop seem to be the best for good capacity and long life over many recharge cycles. The others die off or have low capacity, but eneloop seems to just keep going.

[0.115 lb] These are only one of two types of BR-404 Ni-MH AAA that work in the Olympus Audio Recorder. These were the only ones I found at a reasonable price.

[3.5 oz / 100 g] These new V.3 pouches are even better than the V.2. The rain covers are designed much better!

[0.185 lb] Great light but getting the rechargeable battery will make you use it so much more often.

[Yes] I love the fact that the battery is rechargeable!

[NEMA 1-15P Male] I was especially happy to see this power adapter associated with my MH-25a Battery Charger replacement. I will be using it here shortly.

[5.8 oz / 166 g] Used it for 16850 and ni-cd. Display of state of the charge and battery is nice

[1.2 V] Best rechargeable battery for flash light.

[0.495 lb] One of the Q&A’s says the Bescor BLS50AC dummy battery adapter kit is not compatible with the Olympus E-PL9.  I asked Bescor ( answers@bescor.com ) why the kit is compatible with the Olympus OM-D E-M5/M10, but not the Olympus Pen E PL9, since all three use the same Olympus BLS-50 battery.   The response was: “It will work. Your camera just needs to be added to our list.” The Bescor is 8V 3A. The Olympus battery is 7.2V 1175 mAh (1.175A).  I did some online research to see if a device built for 7.2V could operate at 8V.  One person describing himself as an engineer posted that 7.4V Lithium batteries actually span a 6V to 8.4v voltage range depending on state of charge of the battery.  Another “senior electrical engineer” said that because all devices are designed with some voltage tolerance value, a 7.4 volt device means 7.4 volt +/- 1 to 1.5 volts.  Still other posts indicated that you can use a 3A power adapter on a 1.5A device.  By logical extension, I figured (I don’t actually know) that since the PL9 uses a 7.2 volt battery, it is probably designed to also work at 8 volts, and is also okay running at 3A. Based on the response from Bescor and the Internet voltage and amperage responses, I decided to purchase the Bescor and use it with my PL9.  I haven’t seen any sign of overheating or other problems with this setup so far, but will update this review if that changes. I did not deduct points for the need to leave the battery compartment open because I knew that would be the case when I bought it.