Energizer NH22BP ACCU 9-Volt Rechargeable Battery
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Customer Reviews of Energizer NH22BP ACCU 9-Volt Rechargeable Battery
Customer Review: Know what you want first
Summary: 4 Stars
I read the reviews by other people here and am wondering loudly whether they know what these batteries are for? they are Rechargeable batteries for high-drain devices that require higher mAh rating. NiMH batteries or NiCd batteries do not hold charge like an alkaline battery so if you have charged an NiMH battery and put it in say an alarm clock, the batteries will lose charge in less than a month. they are for immediate usages like digital cameras where you need high mAh batteries and that digital cameras drain batteries. its more like "spend it immediately" battery unlike the disposable batteries that discharge in a circuit but drain very slowly when not in a circuit. I use Energizer AA batteries for my digicam and they recharge the flash much faster than even the best disposable batteries. A best guide is to look whether the appliance for which you are buying this battery is listed on the package or is identical to those on the package. this 9V would be a great thing for a toy where the battery drains out fast and you cannot afford disposable ones everyday.Just a note: If the device is a direct draining one like a motor and not in a solid-state circuit, do not use a rechargeable battery since if they are completely drained, they cannot be recharged.
Customer Review: Works well but needs charged frequently.
Summary: 3 Stars
I have been using rechargeable batteries for years (AA's only) so when we found out we were expecting a new addition to our family, we began purchasing other sized rechargeable batteries for all of the battery operated baby gear we were planning on using. They cost more initially be were were aiming to save more in the long run and reduce the waste created from used disposable batteries.
We only have one rechargeable 9 volt battery that we use in our baby monitor. It's just a basic baby monitor, nothing fancy. Perhaps a rechargeable battery isn't the best battery to use for this particular application because I end up charging these batteries twice a week or so. I don't mind but sometimes it is a pain- when the batteries die and he's just laid down for bed and I'm trying to catch up on housework.
Although I will say, that they do work just as well as regular batteries except that they must be charged frequently. I should also mention that I have never tried using disposable batteries in the monitor, they may drain just as fast?
At any rate, these are good batteries. I've always preferred Energizer over other brands. And I am really not disappointed with this battery either. It's all in perspective.
Customer Review: Excellent if you buy them for the right purpose
Summary: 5 Stars
I use several of these for my paintball gear. It is something that is a use it or loose it type thing. They aren't designed to be used over a long term. Charge them, use them, and then recharge them before next use. They are designed to be that way. Not for a smoke detector, that is for sure. They have a higher flow rate, meaning when I put it in my paintball hopper, I know that I am good to go for the day. When I am done for the day, I just take it out and wait till the night before its next use, then charge it back up. With no fear of it failing on me the day of use. I highly suggest it for uses such as mine, or digi cams and the like. Something that requires a lot of power for a short term.Customer Review: Cool, but size is a little off
Summary: 4 Stars
I've bought 4 of these, and they work pretty well, but they're a little off-sized and don't fit into everything. I'm using these in 2 Ibanez SRX705 active basses, and in my Cordoba classical/flamenco guitar, but it wouldn't fit into the slot for my Ibanez acoustic bass - it got stuck and I had to work it back out. They work fine and seem to last a good while, and I like that you can recharge them. Just be aware of whether you have enough room for it - if it's a pretty tight fit, this may not work.
I haven't ever found these in any store, only the AA & AAA batteries, and Energizer makes a cool charger that charges all 3 sizes - this is the one I bought and it works well: [...]
Customer Review: Odd-shaped 9-Volt Battery
Summary: 1 Stars
I bought this rechargeable battery for my electric bass. I go through batteries once every two weeks, so though rechargeable would be the way to go. However, when I tried to insert the 9-Volt battery into the rear of the bass...it wouldn't fit. The battery is ever-so-slightly odd-shaped. I have no problem with standard alkaline Duracell and Panasonic 9-Volts, but not this Energizer rechargeable. I went to Radio Shack and bought one of their rechargeable 9-Volts and it fits like it should.
Please Energizer, consider using standard sizing in your manufacturing! If it wasn't so inexpensive and problematic, I would have returned my purchase.