Changing Battery In iComm To A Rechargeable One

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3664
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Changing Battery In iComm To A Rechargeable One

Post by 3664 »

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The battery in my iComm started to die, so I had to get a new one.

The quick and easy way is to buy one directly from Jim Sauter that creates the iComm, but with the international shipping being extremely high compared to the value of the battery I decided to try an alternative, namely install a batteryholder for a recharcheable battery, so that I don't have to worry about buying batteries again.

The battery contained inside the iComm is a pretty specific one in that it has two pins on the underside (+ and -) that attach in two holes on the circuit board something that is not very common for buttoncell batteries (although not that uncommon if they are supposed to connect directly to printed circuitboards (PCBs).
The battery is a Tadiran TL-2450 with 3.6 volts and 560mAh of capacity (can deliver 560mA of current for an hour, 56mA for 10 hours, or 5,6mA for 100 hours, you get the picture...).
It should be possible to get a different battery and swap them as long as the voltage is the same, because the iComm is very sensitive to changes in voltage, as Jim told me.
I chose to use a similar battery in the rechargeable 3.6 Volt LIR-2450, it has a lower capacity at around 120mAh (it doesn't last as long), but that shouldn't be an issue as I can just recharge it when it gets depleted.

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I also bought five batteryholders for 2450-batteries (four extra so I can give out to others that have iComms).

The iComm as it comes originally, with the Tadiran Battery:

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The Tadiran-battery removed, and you can see the holes where the pins for the positive and negative poles go (The positive pole is in the centre of the ring and the negative is the one above where it says "JP2":
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The back of the iComm, with the pins for the poles on the left side (negative on top and positive on bottom):
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The batteryholder with wires soldered on (I'll backtrack a bit):
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Wire soldered on to the positive connector on the batteryholder:
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Wire soldered on to the underside of the negative connector on the batteryholder (which has been removed from the batteryholder for easier soldering):
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Another shot of the wires soldered on:
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I had to cut out a slot for the wire to go through, as the iComm is too tight for the wire to go on the outside of the batteryholder:
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The batteryholder placed where it will be sitting:
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The wires soldered on to the underside, they have to go through the hole in the centre because space is at a premium inside the box (be sure to connect them to the correct poles):
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Finished!
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The batterycharger I bought for about $4:
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The total cost for parts (including charger) is about $6 or so, with the batteries, batteryholder and charger bought from China via eBay. If you can source the same parts locally that's great, but I couldn't so I chose to buy from the chinese.

Please chime in if you have any comments or questions.
Last edited by 3664 on 22 Apr 2014, 22:59, edited 4 times in total.

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TI-2096
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Re: Changing Battery in iComm

Post by TI-2096 »

wow, that looks fiddly enough id say.

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TD-6237
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Re: Changing Battery in iComm

Post by TD-6237 »

Excellent tutorial! Good job, Martin!
At this time, a friend shall lose his friend's hammer and the young shall not know where lieth the things possessed by their fathers that their fathers put there only just the night before, about eight o'clock.
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3664
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Re: Changing Battery in iComm

Post by 3664 »

I can probably do the same to yours and Hans Petters iComms, Stein André.

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Re: Changing Battery in iComm

Post by 50157 »

That is awesome Martin (SIVERTSEN!)
I will transfer 100 NOK to your weapon display ;)
Just have to get around to do it! But it will come!

3664
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Re: Changing Battery in iComm

Post by 3664 »

Thanks, buddy!

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Re: Changing Battery in iComm

Post by 54321 »

Smart.

Because that icomm drains its battery faster than advertised, right? Mine died after around 15 troops.

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Re: Changing Battery in iComm

Post by TI-2096 »

That Wold bedre Great martin!
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3664
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Re: Changing Battery in iComm

Post by 3664 »

TK-54321 wrote:Smart.

Because that icomm drains its battery faster than advertised, right? Mine died after around 15 troops.
Thanks!
Mine lasted around 25 troops, but I guess it depends on the length of the troops and how much you use it.

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Re: Changing Battery in iComm

Post by 2959 »

You should post this on FISD ;)
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