They are recharged using any old USB charger/power supply. For real and consistent 1.5v power, there are Li-ion AA-sized batteries that use built-in buck converters to reduced voltage from 3.7v to 1.5v. I’ll stick with something I do know a bit about: Li-ion batteries. Good for only 30 shots then with each charge there is the expected reduction in capacity. However, others say the batteries perform well for a longer period of time.”Īgain a report coming from other reports of limited battery life. “Another issue that photographers and other reviewers report is that NiZn batteries work well for the first 30 charges, then after this point they tend to self-discharge (go flat) quickly. “However, when freshly charged, the terminal voltage of NiZn batteries is around 1.85 volts, which can be hazardous to many battery-operated appliances - they are usually built to handle a range of 1.2 to 1.6 volts.” NiZn batteries also require a special charger optimized for their chemistry.” However, NiZn batteries do not have a long life - after about 30-50 recharges, they tend to go flat easily. “This makes NiZn battery perform well in high-drain devices like handheld games. Suppose to have the life of those old Ni-Cad batteries. Looking like the best NiZn is the PowerGenix. ![]() With the NiZn, I’m thinking this is false economy. I’m back to where the Eneloop’s are and they do fine – not great but just fine. So at around 40 cycles, I’m down to around 75% and dropping. “A disadvantage is increased self-discharge rate after about 30 cycles, so that batteries do not hold their charge as long as when new.” However, I still wonder if anyone has successfully used them in a camera? Which is why I stated a few times that I wouldn't recommend NiZn for a flash unit. I think current flash units are designed for 1.2v AA batteries therefore they don't need the higher voltage batteries, which may even cause damage. Note: I would NOT recommend them for a flash unit as they are better suited for slower, low rate, constant drain rather than high drain applications. But was wondering if anyone did.and what happened. I supposed I could charge them only to 1.6volts, but a lot of their energy would be missing. My camera automatically stops using battery power at 1.2 volts which is perfect for NiZn batteries. That would start the camera at 7.6 volts, vs maximum with Alkaline AA's of 1.54 X 4 = 6.16 Volts Just wondering if anyone ever successfully used them in a 4 AA battery camera? They seem to store a relatively large amount of energy and have a desirable discharge curve for digital camera applications. Some I've had for 4 years or more with almost no loss in capacity and hundred of cycles. I've gotten absolutely stellar results from them in other applications AS LONG AS the voltage is protected and never drops below 1.2 volts and the drain is not high current (such as a flash unit). They second box charged up fine and looks ready to rock.NiZn AA batteries are called 1.6v batteries, but when you fully charge them they charge up to 1.9v (Still have to return the original set they sent). Luckily, Amazon is amazing and I had another box at my door the next day. Having said all that, I just bought the Twarf and had a bad cell right out of the box. They cost the same (factoring in the cost of the charger), but the PK Cell are cheaper by themselves You can charge any amount you want simultaneously. ![]() No indication that charging is done, so I don't know if it actually stops applying full voltage or not.Įach Li-on individually will turn green when it is done. The PK Cell well charge 2 batteries at a time, so if you have a bad cell, you will spend more time recharging as you figure out which one it is. This also offers another advantage in that the individual cell with get the voltage it needs and you will know it is actually fully charged. ![]() You need to is the special charger for the PK CellĬharging circuit is built in each Li-on, so you can use any phone charger or us port. Voltage output is steady on both till they are pretty much empty, so draw there. Voltage is slightly better, yes, 1.6 vs 1.5, but again, I consider this a draw and not worth the trade off. So is 1500mAh vs 1562.5mAh (assuming they actually pump out that long) draw. Here's why I just bought Li-on over NiZn, specifically these: įirst of all, the PK Cell has the title in their listing wrong, it's not 2500mAh, they are 2500mWh.
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