Beginners Guide to Processing 18650 Cells | Cell Database


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HBPowerwall (Official)
#21
That's some very nice work ... very orderly and professional , and some serious storage capacity ...

The question must be , with so much capacity , what do you charge up to ? ... it seems to get the max life from the cells 3.9 or 3.8 is the highest we would want to go ??? Discharging no lower than 3V?
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#22
(02-24-2017, 07:41 AM)ozz93666 Wrote: That's some very nice work ... very orderly and professional , and some serious storage capacity  ...

The question must be , with so much capacity , what do you charge up to ?  ... it seems to get the max life from the cells 3.9 or 3.8 is the highest we would want to go  ???  Discharging no lower than 3V?

Charge to 4.0 when it's good weather, 4.1 if i know we have a few cloudy days, 3.57 is bottom voltage or 57.4 & 50v
http://www.hbpowerwall.com for a full video diary of my project.... 
https://www.amazon.com/shop/hbpowerwall to buy stuff I use Smile 
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#23
Thanks for the live youtube this am, or was it your pm. Good to see you chat about alternatives to the parts you are using. I wish someone would come up with an easier way of interconnecting the batteries.
hbpowerwall likes this post
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#24
There are many ways of doing it, using those four cell holders from Amazon many are 3D printing solutions. My way is not the only way to approach this type of DIY project - do your own research and see if you can make it better!
http://www.hbpowerwall.com for a full video diary of my project.... 
https://www.amazon.com/shop/hbpowerwall to buy stuff I use Smile 
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#25
Batrium Package I'm currently using - https://www.batrium.com/products/starter...4s-longmon

[Image: WatchMonWithMisc1_640x640.jpg?v=1487561708]
I will be ordering more LongMons & maybe a Bridge Connect to attach them to my packs in the next week or so, so far I'm totally impressed with what this BMS offers. The more I ask the more it seems to do. But for now totally happy with it's monitoring and reporting abilities and how about fans to keep shed cooler!
http://www.hbpowerwall.com for a full video diary of my project.... 
https://www.amazon.com/shop/hbpowerwall to buy stuff I use Smile 
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#26
Long awaited updated project cost.

This is as good as it gets for how much I've spent, don't burn me on the little details take it for what it is. 

If you have questions please ask  Big Grin

Updated Price List
Andreas Kvernes and tchipperfield like this post
http://www.hbpowerwall.com for a full video diary of my project.... 
https://www.amazon.com/shop/hbpowerwall to buy stuff I use Smile 
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#27
The killer is the battery cost though... if you can't get them around $1/cell its quickly gets painfull
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#28
(03-28-2017, 12:49 PM)baradhili Wrote: The killer is the battery cost though... if you can't get them around $1/cell its quickly gets painfull

You should be able to get them substantially cheaper than that. At $1/cell, that's $6/pack, insanely expensive.
Solar Setup: 9x 320w panels, PCM60X charge controller
Battery Setup: 14x 120 cell 18650 packs, 48v configuration

Recommended Items:
Opus BT-C3100, Cell Heat Shrink, 4-Cell Holders
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#29
(03-28-2017, 01:03 PM)mike Wrote: You should be able to get them substantially cheaper than that. At $1/cell, that's $6/pack, insanely expensive.

new to this, but where can you get them under $1/cell?
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#30
(03-28-2017, 02:05 PM)baradhili Wrote:
(03-28-2017, 01:03 PM)mike Wrote: You should be able to get them substantially cheaper than that. At $1/cell, that's $6/pack, insanely expensive.

new to this, but where can you get them under $1/cell?

Are you talking about used laptop packs or buying brand new cells?
Solar Setup: 9x 320w panels, PCM60X charge controller
Battery Setup: 14x 120 cell 18650 packs, 48v configuration

Recommended Items:
Opus BT-C3100, Cell Heat Shrink, 4-Cell Holders
Reply


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