Showing posts with label rechargeable batteries. Show all posts
Showing posts with label rechargeable batteries. Show all posts

5000mah External Backup Battery for Iphone 4g, 3g, 3gs & 3rd Generation iPod Touch, Motorola Droid, HTC Android, Blackberry (curve, bold, tour, storm) & Many Different Types of Mobile Devices (White/Blue) Review

5000mah External Backup Battery for Iphone 4g, 3g, 3gs and 3rd Generation iPod Touch, Motorola Droid, HTC Android, Blackberry (curve, bold, tour, storm) and Many Different Types of Mobile Devices (White/Blue)
Average Reviews:

(More customer reviews)
I bought a couple of these battery packs thinking they were identical to other 5000 mah battery packs but they are not. I bought two of these last spring and I liked their ability to charge my phone at the same time the battery pack was being charged. If you only have one USB port it is important to be able to charge both this battery pack AND your iPhone at the same time. As I said earlier, I had already bought ywo of these units before and they COULD charge both at the same time. But the battery packs sold by this Amazon seller DO NOT work like the battery packs I bought 7 months ago.
It is more convenient to charge both the battery pack and your iPhone at the same time. But when you are charging this battery pack it CUTS OFF all power to anything connected to it. I don't know why this item looks identical to other battery packs when it obviously is designed differently, and not as good. Perhaps this unit is from a batch of defective or poorly engineered units. I dint know. When I presented this problem to the merchant I did receive prompt responses but they could not explain the two different designs, or the flawed design of the ones they are selling.
Another problem with this battery pack happened when the rubber stopper to protect the USB port just fell off after opening it twice.
If you are wanting a 5000 mah battery pack make sure it's one of the good ones, and not like this unit that doesn't provide power to your iPhone while you are charging the battery pack. I requested replacements for the 2 battery packs but I haven't heard anything from the merchants since I asked for battery packs that worked like the battery packs I bought 7 months earlier.
Note: There are other companies offering battery packs that are almost 20% more powerful than these units so I'd check them out before buying these battery packs. There is one battery pack that even has two charging ports instead of just one so if you like versatility then it will be to your benefit to search for a better product.

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Trade Mark Bear Motion is sold and marketed by Bear Motion Exclusively.***Detailed Product Descriptionmobile phone charger 5000mAh li-polymer battery Intelligent dynamic output currency different colors ***Feature:1.Charge for all 5 voltage digital products like mobile phones, MP3,.MP4 and PSP ,such as:*Five popular brands mobile phones(Nokia,Samsung,SonyEricsson,Siemens,Motorola)*Apple iPod nana,iPod Classic,iPod Touch,Apple iPhone/iPhone 3G/3Gs*Blackberry*Digital Camera,MP3/MP4 player,PDA,GPS,Bluetooth headset,Gaming player(PSP,NDSI etc)portable device.2. Employs the finest li-polymer battery that produces by global well known ATL COMPANY that can ensure the longevity and security3. Practical to charge four more times for the mobile phone, as the huge battery content reaches 5000mAh4. Adopt single chip and intelligence circus controlling ,various protection from over charging, over discharging and short circus, so that your digital products and mobile phone cant be harm any5. Unique temperature protective function, The facilities will stop working automatically when the environmental temperature over 50°C, so that better to protect battery, digital products and mobile phone,6. Fashionable and elegant , delicate and fine and the artwork almost can compare with iPod/iPhone*** Specifications:High capacity built-in polymer battery:5000mAh/3.7V(18.5wh)Battery Type: Polymer Li-ion battery (ATL)Cycle life:>600 timesOutput Voltage: DC5.5V±0.2VOutput current:550-1000mA (Intelligent dynamic output)Charge methods:PC USB port or AC adaperCharge time:*By computer charge:about 8~10hours*By wall adapters(5v/1000ma) (OPTIONAL, NOT INCLUDED):about 5~6hoursRuning Temperature: -10~50oCIndicator:Three signal indicator to show the battery volumeInput interfcase:DC 3.5Output interface:USBProtect function: over charging, over discharging, over load, and short circusDimension: 99×71×18mmWeight: 160g

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DeLorme Earthmate PN Series Power Kit Review

DeLorme Earthmate PN Series Power Kit
Average Reviews:

(More customer reviews)
I received a new Delorme PN-40 for Christmas (thanks, Santa!) and immediately ordered this travel kit from Amazon. While waiting on the order I used both Energizer "Industrial" alkaline batteries (one set, lasted probably 12+ hours but I didn't time it) Ray-o-vac el-cheapo batteries (lasted about 8 or so hours, again, didn't time it). But I usually use a GPS receiver while geocaching, and I'm very often in a vehicle, on an ATV, or on a bicycle. My truck and the ATV have 12V power points, so why not use them for power?
[Edit: corrected mAh comments]
When I got the kit I immediately installed the batteries, plugged in the 110V charger, and let it sit overnight. The next morning I unplugged it and turned it on, seeing 4 green bars. Unfortunately, this had dropped to 2 yellow bars within 20 minutes, so I start checking things out. That's when I notice that the battery was only rated at 1400mAh, which is on the small side, but still should be adequate. An average rated alkaline battery can have a much higher mAh rating, and high capacity batteries can have well over 2000mAh. So possibly the battery capacity bar is based on the highest capacity battery, so even when fully charged it's slightly over half of maximum.
This was disappointing, and worth a deduct of 2 stars (from the battery life rating), but I could deal with it. I always keep several spare AA batteries to feed my flashlight and headlamp, so I'd just throw a couple extra batteries in the pack if I needed more than extended outings.
About three days after getting the kit I go on an extended geocaching outing. A little less than 300 miles driving with about 8 miles walking/biking over 26 stops. Maybe 8 hours in-vehicle and 7 hours out. While driving, the receiver was always plugged into a 12V power point. I assumed the battery would last me all day; any amount discharged while walking SHOULD have been recharged while driving to the next destination. Wrong. About 1/2 through the trip, I got a low battery warning while walking (meaning it was down to 1 bar). About 3/4 through the trip, I got a critical battery warning while walking and the receiver shut off. I replaced with a pair of alkalines from my pack and kept walking. Back at the truck I kept it turned off and let it charge to the next stop. I had enough power to last for one geocache, then it shut off again. It turns out that just because it's plugged it, the receiver is running on external power, and the battery type is set to "rechargeable", that doesn't mean the batteries are actually getting charged. They aren't running down, but they aren't filling up either. I had to work a bit to make sure the status said "charging", usually requiring shutting the unit down and re-starting. This is a more serious problem. I would have deducted far more than 1 star from the "convenience" rating, but I feel this is more of a receiver problem than of a battery/charger problem.
Ultimately, though, this is a good purchase and worth the money. It's much cheaper than buying each item individually, and if you use it a lot, it's much cheaper than buying lots of alkalines to throw away.
Pros:
- allows the use of external power while driving, even if using alkaline batteries
- reduces waste having to throw away dead batteries
Cons:
- low capacity battery
- battery sometimes doesn't charge when the receiver is running and plugged into the 12V adapter

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The PN-Series Power Kit provides a complete Lithium-Ion rechargeable power solution for the Earthmate GPS PN-Series device

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