Power One Varta pocketcharger button cell charger NiMH button cell battery

Chargeur très pratique pour mon appareil auditif.

My hearing aids require a P10 battery, 1 per HA (I call mine "Earwigs.) I bought the Power One pocket charger and 4 rechargeable batteries. ,The advertising on the package says "fast charging in 2.5 hours"., more like 8-10 hours, even with high power 4 Amp supply. The cord for use with the Power One adapter is not designed to last should the user move the PocketCharger often. The idea would work if all you did was never moved the charger or cord. The charge port on the portable portion of the charger is connected by a connector that could easily become problematic. The odds are, even if inserted correctly, the pin in the portable portion of the charger you could bend the needle inside the connection port and intermittent connections would frustrate the user. I measured the NiMH batteries after having been charged overnight > 10 hours, voltage was 1.35 VDC on 1st set of batteries (I bought 2 sets). At $20 per set, I figured the Powerone engineers thought about long time use. I was wrong, longest time in nearest hour of operation, 6 hours on one earwig, the other 7 hours. 2nd pair didn’t even get fully charged. I would have to have at least 8 chargers and 6 pairs of rechargeable batteries, 2 ea for office, home, car, battery room. Now before anyone gets PO’d, my background is Electronic Engineering, the following statement is just a basic battery growth and activating the Zinc-Air battery.As described by Bloom (2003), “the tiny button cells (Zinc-Air) used in contemporary hearing instruments typically have double the life of the old mercury cells and three times that of silver oxide” and they are “small, lightweight, and leak resistant, offering large capacity, stable voltage, and start-up on demand.”Now that’s good but not quite true for ZINC-AIR batteries. I’m a user, heavy user, 12 hours per day and longer in many instances. I have tried many of the USA accessible Zinc-Air batteries, I’ve settled on Powerone P10 cell for my earwigs. Powerone has quirks too! After you buy them and you need to change your earwigs battery, with the first warning 1st, 2nd, 3rd that the batteries are getting low and need to be changed, in my case I get 3 warnings to change the batteries. Now use common sense, DON’T TRY TO CHANGE BATTERIES WHERE YOU CAN GET INJURED OR WORSE KILL SOMEONE ELSE/ EXAMPLE: WHILE DRIVING! Should you decide to do that, the odds are against you and you are a GENUINE “Darwin Candidate”!So with the warning to change batteries, I usually go to a McDonalds get a hamburger, Coke and NO FRIES! Find a parking spot and take the label off the Zinc-Air batteries set them down and enjoy my Coke and burger. (I change both at the same time, why? I found out my right earwig uses less power than the left ear by about 4 hours. Thus if I have to, I can drive with only one earwig for approximately 2 to 4 hour or the nearest McD’s or stopping point other than the side of the road.) Let the cell sit for a minimum of 5 minutes and 10 maximum after tab removal. This will achieve full activation of the cell. The Label on the + side is covering a microscopic hole on the battery to keep the cell from activation! Zinc-Air cells work on oxygen to activate with a chemical to make electricity to run the earwig. Should you not do this, you can lose up to 30% operational time. And, NO you cannot remove the tab for 5-10 minutes and then put it back on the cell to use later. Chemical reaction once started cannot be stopped.Bottom line, I WOULD NOT RECOMMEND the Powerone pocketcharger or Powerone RECHARGEABLE BATTERIES FOR ANYONE! I personally like to have to change batteries only every 4 days rather than twice a day.

I bought this, and the batteries to go with it for my Vario hearing protection for shooting. It charges easily while on the go. And the batteries last far longer than the single use batteries.

Excellent produit très pratique

This is a very handy charger that allows me to use only 2 sets of rechargeable batteries to power my hearing aids. The charger has it's own internal battery which allows you to charge two batteries when you are not near a power source. That said, the charger itself uses a usb plug for its power, so any computer or power brick that you have can serve as the main power source for the charger. The charger does come with a transformer that provides 1 usb port. When the charger is plugged in it will charge the onboard battery and 2 hearing aid batteries at the same time. Separate status lights provide individual status regarding the ongoing charge for the main battery and each of the hearing aid batteries.My hearing aids use 312 type batteries, which can reportedly be charged 1000 times each. Using throw away batteries I get about 3 days use. Whereas my rechargeables will on average last me 1 full day; occasionally if the environment is really working the hearing aids the batteries will give out an hour or so earlier. I just put the depleted batteries in the charger and drop the spare pair in.The charger is "smart", and will analyze the charge state of the batteries and determine the best charging strategy that should be used for each battery. It will top off a cell that only needs to be topped off, and will fully discharge batteries that are mostly discharged. Fully discharged batteries start charging right away.I do have some difficulty getting my hearing aids to start, sometimes when using the rechargable batteries, and this might be frustrating for some. The cause of the difficulty isnt clear, but gently squeezing the battery door for a few seconds gets the units to start. Speculation is that the batteries are either a slightly smaller diameter, or are unable to consistently provide initial surge-level voltages during the aid's power-up. Sometimes if the aids are jostled they will reboot. This appears to be an issue involving my particular hearing aids and the brand of batteries (Forza/OnePower) and is not an issue of the charger.