In A Nutshell When recharging a camera flash, you need a battery capable of delivering a high amount of current in a short time. Ideally, you want the batteries with the highest rated capacity. The highest capacity rechargeable AA batteries are: Ansmann’s 2850 mAh batteries and Powerex’s 2700 mAh batteries. Of these two batteries, Powerex’s 2700 mAh gets the most […]
In A Nutshell The best Ni-MH (Nickel-Metal Hydride) battery charger is a “smart charger” like the LaCrosse BC-700 Charger (sells for $36). Smart chargers have circuitry to prevent overcharging and damaging your batteries. They also provide features that allow you to test and “renew” Ni-MH batteries. If you are looking for a charger that also charges C, […]
Do rechargeable lithium-ion batteries exist in standard sizes like AA, AAA, C or D? They do, but they don’t operate at 1.2-1.5 Volts. According to Isidor Buchmann, author of Batteries in a Portable World: A Handbook on Rechargeable Batteries for Non-Engineers, this is due to safety concerns — people might try to charge them in chargers made […]
A company called G7 has released a 900 lumen LED light bulb, which is selling for around $19. This warm white ( 3,000K) bulb runs on just 9W, and it is equivalent to a 65 watt incandescent bulb. It has a 75+ Color Rendering Index (CRI) — quality household lights tend to have the CRI between 80 and […]
Sanyo’s Eneloop batteries have had an edge over other rechargeable AAs since they were released in 2005. Basically, Eneloops could retain their charge longer than other rechargeables, including other low self-discharge AAs. Eneloops can hold 85% of their charge for one year, and 75% after three years.