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Gear / Technical Help => Remote Power => Topic started by: voltronic on July 15, 2014, 05:22:56 PM

Title: Great deal or too good to be true?
Post by: voltronic on July 15, 2014, 05:22:56 PM
http://www.amazon.com/15000mAh-Portable-Ultra-High-External-Motorola/dp/B00D5T3QK4/ref=sr_1_1?s=wireless&ie=UTF8&qid=1405459166&sr=1-1&keywords=Anker%C2%AE+Astro+E5+15000mAh (http://www.amazon.com/15000mAh-Portable-Ultra-High-External-Motorola/dp/B00D5T3QK4/ref=sr_1_1?s=wireless&ie=UTF8&qid=1405459166&sr=1-1&keywords=Anker%C2%AE+Astro+E5+15000mAh)

Can something this small really do 15,000 mAh?
Title: Re: Great deal or too good to be true?
Post by: Ultfris101 on July 15, 2014, 05:52:46 PM
No experience with that one, but I picked up one of these Jackery batteries that's listed as 12000 mAh and it can run my USB Pre 2 for a LONG time. Haven't done a run to empty test yet but been very happy with it so far. Anker seems to have a decent reputation.

http://www.amazon.com/Jackery-Fast-Charging-Aluminum-Portable-12000mAh/dp/B00AANQLRI/ref=sr_1_1?s=electronics&ie=UTF8&qid=1405461037&sr=1-1&keywords=jackery
Title: Re: Great deal or too good to be true?
Post by: H₂O on July 15, 2014, 09:00:31 PM
15000 mAh is probably the cell rating not the 5V Ah rating


Probably uses 4 x ~3V cells to get ~7V [size=78%]with a dc-dc step down conveter to get the 5V[/size]
[/size]
[/size][size=78%]Something like 4 of these[/size]
http://www.batteryspace.com/polymer-li-ion-cell-3-7v-3650-mah-5545135-2c-13-50wh-7-3a---ul-listed-un38-3-passed-ndgr.aspx
Title: Re: Great deal or too good to be true?
Post by: jb63 on August 06, 2014, 07:19:45 PM
Hm.
That's one of the batteries I am looking at right now. Has to have a high amperage: 5v / 2.5a output for the Korg MR1, and has to be pocket-sized.
I haven't tried it yet, though. spyder9 posted that he's using this one:

http://taperssection.com/index.php?topic=165057.0

which is the smaller one from the same company. It doesn't have the specs, so I doubt it has the output power.

Ridiculous as it sounds, I'm looking at this one, too:
http://www.braven.com/brv-bank-smart-ultra-rugged-portable-backup-battery-6000-mah.html

But that's HUGELY expensive and small, but not light.
Title: Re: Great deal or too good to be true?
Post by: willndmb on August 14, 2014, 08:27:09 AM
I have a rav power I got from amazon
It's only 10k mah but about the size of a wallet
Runs my dr60d for like 9hrs
The ankers have crazy good reviews for almost every product too, I wouldn't doubt its 15 in that size