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Old players deserve good batteries too

post #1 of 7
Thread Starter 
I present to you the FrankenZen, my heavily modified Creative Zen USB2.0 mp3 player.

In the course of its six years of life it's had a hard drive swap (20 -> 40GB) and a previous battery modification, when its own cell had aged enough that runtime had become unacceptably short. Additionally, some fault developed that stopped it charging the battery and running from its DC adapter, so a mere cell swap wouldn't do - I needed something I could recharge separately.

I attempted to run it on RCR123 cells, but they proved too weedy for the 1.2A spike of the hard disk spinning up, so I decided something with more grunt was in order.

A few hours with the Dremel, the soldering iron and the hot glue gun, a few parts salvaged here and there, and this is the result:



The (relatively) big cell is a 18650 LiIon, as used in laptop battery packs and serious flashlights. The particular one in the pictures is an old, tired one ripped out of a laptop pack, originally 1800mah, now with about half of its capacity left.
I also have a 1800mah and two (manufacturer-rated) 2400mah ones, all new, so I'm in no danger of shortages.

The battery holder is completely homemade (haven't managed to find ready-made 18650 holders yet), the wires are chunky to avoid resistance loss and there's a two-stage switch that allows me to run it from the 18650 cell or from the external leads (the ones with the bullet connectors on the ends; I'll fashion up some way to stop them dangling like that), but not from both at the same time to avoid short circuits.
The external connection is useful in case I want to run it from some other LiIon cell (I've got a few sitting around), NiMH AAs in a holder or a DC power supply (the latter mostly for uploading large amounts of music from the computer).

Also, the closing system of the holder (bendy wire for plastic bags twisted around a zip tie) is temporary. I'll think of something better eventually.

And yes, the metal covers are held in place with more melt glue. I seem to have lost the screws...

It's ugly as sin, but I don't care I actually like the looks of hacked gadgets, and with this mod I can cart around a spare 18650 or two (or some NiMHs and a holder if need be) and enjoy monster run time.

Only problem is, it's a bit bulky... but my winter coats have big pockets, and I carry a spacious fanny pack in the hot days, so that's not a problem.

In case you're wondering, yes, I'm one of those who don't replace old technology until it's been used for all it's worth
post #2 of 7
Good lord, the Zen was a huge tank/brick without an enormous battery slapped on it

Cool though, my Zen Xtra's battery always died too soon.
post #3 of 7
Good luck getting that on a plane.
post #4 of 7
Quote:
Originally Posted by YamiTenshi View Post
Good luck getting that on a plane.
Haha. So true!

"I can see a bottle of lotion in that acrylic casing. Leave us your home address and we will have it sent back home for you." - TSA

Seriously though. I bet that thing is destined for stationary or near stationary use at the home or office....right?
post #5 of 7
Quote:
Originally Posted by YamiTenshi View Post
Good luck getting that on a plane.
Classic!
post #6 of 7
Thread Starter 
Quote:
Originally Posted by Amblin View Post
Seriously though. I bet that thing is destined for stationary or near stationary use at the home or office....right?
Wrong
I've carried it around with me for years, and I intend to keep doing so. The battery holder makes it a bit bulkier, but not so much that it's uncomfortable. As I said, I have large pockets.

Why would I have trouble bringing it aboard a plane? I can just pull it out, connect my headphones, power it on and let the security people listen to some good melodic metal
post #7 of 7
Wow, and I thought pulling my Zen Xtra out in public was embarassing :P
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