Author Topic: Anyone making their own Lithium powerpacks?  (Read 708 times)

Offline kid_couteau

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Anyone making their own Lithium powerpacks?
« on: March 14, 2018, 07:28:20 AM »
Hi
I have been following Survival Tech Nord on youtube and Facebook and I like his ideas for power packs.

BUT

I find that the stuff he uses is a bit too champagne for my beer budget.

Are there any BMS and such that are decent but a bit more frugal?

Kid

Offline Greekman

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Re: Anyone making their own Lithium powerpacks?
« Reply #1 on: March 14, 2018, 03:42:41 PM »
yes there are..many found on ebay, but due caution is needed regarding specs.
But the main cost is the lithium batteries. NO way getting around this

You can keep the cost down you want it for handhelds and QRP rigs...

Offline FreeLancer

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Re: Anyone making their own Lithium powerpacks?
« Reply #2 on: March 14, 2018, 04:00:37 PM »
I want to, and I have a bunch of cells and components, but my fear level is high. 

Offline Smurf Hunter

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Re: Anyone making their own Lithium powerpacks?
« Reply #3 on: March 14, 2018, 04:23:18 PM »
To expand on Greekman's comment, if you want ultra-portable (QRP), then low power consumption and light weight are both attributes of your setup. You won't need a large quantity of these cells for moderate operation.

On the other hand, for a fixed station, it's considerably cheaper to stick with conventional SLA.  If you aren't carrying them, who cares how heavy?

Offline Alan Georges

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Re: Anyone making their own Lithium powerpacks?
« Reply #4 on: March 14, 2018, 06:38:54 PM »
I want to, and I have a bunch of cells and components, but my fear level is high.
^^^ this.  Another consideration is that there are several types of lithium chemistries used in batteries.  Some are very safe, others not so much.  LiFePO4's seem to be very stable, but they don't come cheap.  Cheaper than a raging fire though.

Smurf's SLA suggestion is a practical approach for home, backyard, etc., up through car-portable.  If you want to go lighter, remember the old saying "cheap, light, strong: pick any two."

Offline Greekman

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Re: Anyone making their own Lithium powerpacks?
« Reply #5 on: March 15, 2018, 02:00:22 PM »
I want to, and I have a bunch of cells and components, but my fear level is high.
com'on! not you!
it would be nice to find the first OH8STN build. 4x18650 Li-Ions in a tray and a protection circuit.
The real danger in Li-ions comes from overcharging. I haven't heard of any other instances.
If you forego charging them as a pack and charge them in a cradle charger you will be fine.

Offline idelphic

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Re: Anyone making their own Lithium powerpacks?
« Reply #6 on: March 16, 2018, 03:44:06 PM »
Take a look at Vruzend (www.vruzend.com)

They have a solderless pack kit, and BMS unites for decent prices.