![Mr. Green :mrgreen:](https://www.econologie.com/forums/images/smilies/icon_mrgreen.gif)
Mais à propos des NiMh, j'ai pas chômé, j'ai trouvé ceci: https://www.econologie.com/forums/duree-de-v ... 10160.html
enzo20134 a écrit :Concernant SCPS et de mémoire,...ils ne semblaient pas capables de démontrer les résultats qu'ils avançaient...bref mon petit doigt me dit qu'il y a baleine sous caillou !
En effet cela recoupe d'autres infos que j'avais... Vous le formulez plus crument.chatelot16 a écrit :ne cherche rien chez ces bran.... de SCPS
Je comprend pas...chatelot16 a écrit :pour moi l'avenir des batterie est une batterie demontable et reparable : pas facile avec l'acide sulfurique qui doit etre 100% en plomb : la presence de n'importe quel autre metal empoisone le systeme
This review is from: PowerGenix ZR-PGX1HRAA-4B 1 Hour Quick Charger with 4 AA 1.6v NiZn Rechargeable Batteries (Electronics)
I have the charger and 16 batteries purchased from Wolf Camera about a year ago. During camping, I ran the batteries in my 4W florescent light and recharged them when it dimmed about 5 times. Some of them refused to charge because the charger gave a blinking red light. I was able to get the charger to accept those by charging them on an Ice battery analyzer for about 100 mAH at 200mA or up to 1.9V cutoff and putting them back in the charger. They would accept a charge, but the capacity was less than 1Ah. I did discharge test on all 16 of them at 1 amp down to 1.2 V and wrote the capacity on them one year later. The best one did 1033 mAH, the rest were 500-800 mAH. Many have died. 3 had internal shorts that would drain them to 0V in a day. 2 more died too quickly to be used with the others. 1 began to leak from the top in the charger the first time I recharged it. About half a dozen are rejected by the charger. The problem with them is that you have to drain them about 1/3 of the way and charge them right away or they die. This is impractical in reality because they have a high voltage. By the time your camera, light, GPS, or whatever act like the batteries are weak, you have drained them too much for the charger to charge them again. Stay away! I wouldn't expect them to last more than 1 year or 6 charge cycles. Unless your device won't work with NiMH or alkaline batteries I would not bother because at $2.50 each and with flaky reliability it is hard to get your money's worth.
owerGenix ZR-PGX1HRAA-4B 1 Hour Quick Charger with 4 AA 1.6v NiZn Rechargeable Batteries (Electronics)
I've been using these new nickel-zinc AA cells for about 2 months now. I'm impressed by how long they will power things compared to the usual NiMh cells.
I have a Magellan GPS unit that uses 2 AA's. It was probably designed for alkaline cells. New alkaline cells give a full scale battery bargraph, but freshly charged NiMh cells only make the bargraph hit about 80%. NiMh cells drop to about half scale after an hour. I only get about 4 hours with NiMh cells before the voltage drops too low and it turns itself off. Alkalines will last about 7 hours. The new PowerGenix NiZn cells give a full scale battery bargraph for about 3-1/2 hours, then it slowly drops until the unit turns off. My first test powered the GPS for 6 hours and 20 minutes, the second time it went 6 hours and 55 minutes. I left the batteries in the charger longer the second time I charged them, about 4 hours instead of 2. With my GPS, the PowerGenix AA's lasted almost twice as long as 2200mAh NiMh.
I have also used these in my Fuji digital camera that uses 2 AA's. They also last a long time, longer than the NiMh cells I have used in the past. The LCD display is also just a little brighter with the NiZn cells.
I have a little Grundig G6 radio that also uses 2 AA's. It won't turn on with these installed. I'm guessing that the radio is sensing the higher than usual voltage (about 3.6 volts) and won't power up. This is the only device I have found so far that isn't happy with the NiZn cells.
When these come out of the charger, they read about 1.82 volts without a load using my Fluke DMM. Of course the voltage will drop when current is drawn and as the battery discharges.
To sum it up, these cells act a lot more like alkaline cells with the higher voltage available. It takes a lot longer for the voltage to drop down to about 1.2 volts per cell when comparing to NiMh types. These start off at a higher voltage than alkaline and take a good long time to drop to the point when you need to recharge.
Give these a try, I think you'll be happy. I'll be buying more AA's and some of the AAA size when they are available.
dedeleco a écrit :mais je ne suis pas sûr qu'elle empêche de repousser des dendrites de Zn à la recharge prochaine, sur des centres de nucléation de la grille de nickel.
Utilisateurs parcourant ce forum : Aucun utilisateur inscrit et 138 invités