Did anyone ever see this?
www.amazon.com/New-Trent-Extreme-Pack-IMP1000-Blackberry/dp/B003ZBZ64Q
10000mAh? Powerful!
www.amazon.com/New-Trent-Extreme-Pack-IMP1000-Blackberry/dp/B003ZBZ64Q
10000mAh? Powerful!
For 1/3rd the price, I just cobbled up a 2-D cell battery holder powered with 10,000 mAH Low-Discharge NiMH and wired them up to a circuit board that I puleld from one of those Energizer Pocket Chargers (the things they normall bundle with 2 AA Lithium Cells).
I bolted a belt clip on it, and I'm good to go-and in a pinch I can always slap in a pair of Alkaline D cells.
For 1/3rd the price, I just cobbled up a 2-D cell battery holder powered with 10,000 mAH Low-Discharge NiMH and wired them up to a circuit board that I puleld from one of those Energizer Pocket Chargers (the things they normall bundle with 2 AA Lithium Cells).
I bolted a belt clip on it, and I'm good to go-and in a pinch I can always slap in a pair of Alkaline D cells.
I use AccuPower AccuEvolution low-discharge NiMH D cells:
http://www.amazon.com/AccuEvolution-Self-Discharge-NiMH-Cells/dp/B00124BN4U
The circuit board I ripped from the Energizer Energi-to-Go cell phone charger:
http://www.amazon.com/Energizer-Ene...7?s=electronics&ie=UTF8&qid=1288832498&sr=1-7
Here's what the beast looks like cobbled together:
The D-cell holder has a belt-clip bolted on to it. The circuit board from the energi-to-go is hot-glued on to the top of the battery holder. When the phone is plugged into the pack, the blue LED blinks through the hot-glue.
I expect that I'll get hundreds of cycles from the thing.
I have a smaller lash-up using two sets of AA cells wired in parallel. With the NiMH AA I get about 5-10 charge cycles using Sanyo eneloop AA's depending on the discharge of the phone.
Thanks again for detailed explanation! I will try to get the "ingredients" and try to assemble on my own.
I had an urge of buying Energizer Energi-To-Go before, but then i learned that it cannot be used with rechargeables. Is it true?
Correct me if I am wrong with following "naive" calculations - 2 D cells 10000 mAh, 1.2 V each as source and 1280 mAh, 3.7 V HD2 battery as a subject. Assuming the conversion efficiency is somewhere around 80% one gets 0.8x(2x10000x1.2)/(1280x3.7) = 4 for number of full charges of dead empty HD2.
Is it what you experience? (actually that is what i meant under query for number of cycles)
Try the IMP100/880E. over 24 hours and it's still not deadHaving ordered from newtrent before, I can say the IMP products work well. I bought one for a collegue, she got 3 full charges off her IMP500 before having to recharge the battery.
They're decent products, well packaged and they do give a decent battery life.
That's called **** bricks power
Ya mean Varta actually still lives? Last time I saw a Varta-manufactured cell it was at an IKEA store-now even they went with Chinese-manufactured cells.
Too bad-they could have gone to an American-made battery-Panasonic!