The charger weighs 120 g and has a foldaway plug with no external power cord. It has worldwide voltage input and would be conveniently compact for travelling, dimensions about 115 mm x 68 mm x 38 mm. It can charge 1-4 AA cells individually (but only 1-2 AAA cells). Charging time is about 1.5 hours according to the manual. POWERGENIX SYSTEMS, INC. [US/US]; 10109 Carroll Canyon Road, San Diego, California 92131-1109 (US) (All Except US). a front-end charge algorithm for manual and automatic reconditioning of The charger apparently trickle charges for 4 hours after completing the main charge cycle and then cuts off, but they still recommend you not leave the batteries in the charger for more than 2 days. The manual states that 1-2 AA charge at 1500 mA, 3-4 AA at 750 mA, and 1-2 AAA at 700 mA. The power supply is universal at 100-240V. Just make sure whatever you're using them in can handle the extra 0.4v boost per cell. I used 2 of them in my minimag 2aa and it fried the bulb in less than an hour but it gave quite a boost in brightness! And yes Powergenix is the company to buy them from, i got mine from amazon. Make sure to get the 1HR charger combo. Originally posted by m88k. Frank, NiZn batteries, fully discharged, are at 1.6 volts or so, and fully charged, they're at 1.9; a traditional charger only goes up to 1.2 volts, rendering your LaCross useless for charging NiZn batteries. Also, NiZn's are supposed to be topped up, like lead acids, if I remember correctly. The PowerGenix NiZn cells must be recharged using a specially designed PowerGenix NiZn Charger. The charger is called '1-hour', but it actually takes 2.5 hours to fully recharge a set of four 1500mAh cells. Eneloop (and all other brands of LSD cells) can be recharged using any good quality 'smart' NiMH charger. The Ni-Zn rechargeable cells (typically 1.8 to 1.5 volts) offer an advantage over the previous (Ni-Cd or Ni-MH) rechargeable substitute cell technologies which only deliver roughly 1.4 to 1.2 volts through their useful discharge range. I can answer this as I've tried them in my 580ex II flash 1/1 full power manual. In fact I've tried quite a few different batteries. Here are my results fresh off the charger. powergenix nizn - 1.28 sec eneloop - 1.97 sec cp-e4 + 8 eneloop + rayovac 4.0 in flash - 1.00 sec powerex 2700 - 6.06 sec PowerGenix has come out with the first mainstream NiZn rechargeable batteries and battery charger, claiming big claims against standard NiMH rechargeable batteries. According to Steve's Digicams, a reliable website on battery technology, "Their unique NiZn (Nickel-Zinc) batteries offer better voltage output when compared to NiMH There are also no-name or off-brand NiZn chargers available from China on eBay. The white charger is labeled a "1-hour charger", but what that really means is that the batteries mostly full after an hour, but not completely. Powergenix says it takes about 1.5 hours to charge 1-2 AA's, and 2.5 hours to charge 3-4 AA's. In addition, charge time is cut down 75% to about 1 to 2 hours, providing enhanced mobility and longer travel ranges for e-bike commuters. The NiZn batteries also offer greater durability, extending the power system's useful lifespan by more than double that of lead acid batteries.