Beginners Guide to Processing 18650 Cells | Cell Database


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My mini 18650 power wall testing
#1
Video 
Hey everyone this is my mini 120cell 18650 small scale test powerwall. 
system is made up of 
120 Samsung  inr 18650 15m high drain cells configured into a 3s 40p pack
40 watt mono solar panel facing north north west
20amp pulse with modulation charge controller set down to float at 12.7v
a small 50 amp watt hour meter
a 16amp circuit breaker on solar infeed
a 32 amp circuit breaker on inverter feed with 50 amp anderson plugs
a 600watt continuous 1200watt peak modified sine power inverter
puts out up to .5kwh a day in usable power at 240v 
no bms just me and a multimeter
Cheers brad

playlist on youtube here...
https://www.youtube.com/playlist?list=PL...jqJVa9WDLJ



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#2
(01-01-2017, 11:29 PM)One up the sleeve Wrote: Hey everyone this is my mini 120cell 18650 small scale test powerwall. 
system is made up of 
120 Samsung  inr 18650 15m high drain cells configured into a 3s 40p pack
40 watt mono solar panel facing north north west
20amp pulse with modulation charge controller set down to float at 12.7v
a small 50 amp watt hour meter
a 16amp circuit breaker on solar infeed
a 32 amp circuit breaker on inverter feed with 50 amp anderson plugs
a 600watt continuous 1200watt peak modified sine power inverter
puts out up to .5kwh a day in usable power at 240v 
no bms just me and a multimeter
Cheers brad

playlist on youtube here...
https://www.youtube.com/playlist?list=PL...jqJVa9WDLJ

https://youtu.be/xJA7-ePszgc

Can you please link parts you use?
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#3
Ratings for that pack (I looked up the datasheet for those cells)
Nominal Voltage: 3.7V x 3 = 11.1V
Charge Voltage: 4.2V x 3 = 12.6V
Max charge current: 4A x 40 = 160A (2,016W)
Max discharge current: 23A x 40 = 920A (11.5kW)
Capacity: 60Ah 666Wh

I seriously doubt you could put anything like 920 amps through any of those wires, without interesting effects.
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#4
(01-03-2017, 04:30 AM)station240 Wrote: I seriously doubt you could put anything like 920 amps through any of those wires, without interesting effects.

So do you build using wire that is sized based on the absolute theoretical maximum output of the battery ?
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#5
(01-03-2017, 09:15 AM)Sean Wrote:
(01-03-2017, 04:30 AM)station240 Wrote: I seriously doubt you could put anything like 920 amps through any of those wires, without interesting effects.

So do you build using wire that is sized based on the absolute theoretical maximum output of the battery ?

Like I originally said, its a 1000A tesla style fuse, perfect!@
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#6
yeah 1mm copper wire wont take 1000amps lightly haha look like a halogen spot light for 2 seconds

(01-03-2017, 03:42 AM)cstanley Wrote:
(01-01-2017, 11:29 PM)One up the sleeve Wrote: Hey everyone this is my mini 120cell 18650 small scale test powerwall. 
system is made up of 
120 Samsung  inr 18650 15m high drain cells configured into a 3s 40p pack
40 watt mono solar panel facing north north west
20amp pulse with modulation charge controller set down to float at 12.7v
a small 50 amp watt hour meter
a 16amp circuit breaker on solar infeed
a 32 amp circuit breaker on inverter feed with 50 amp anderson plugs
a 600watt continuous 1200watt peak modified sine power inverter
puts out up to .5kwh a day in usable power at 240v 
no bms just me and a multimeter
Cheers brad

playlist on youtube here...
https://www.youtube.com/playlist?list=PL...jqJVa9WDLJ

https://youtu.be/xJA7-ePszgc

Can you please link parts you use?
Hey sorry for slow reply all  the gear i use is easly found on ebay and in my solar playlist on youtube there is a bit more info on the pwm controller and this battery pack cheers ;]
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#7
This looks like a nice "Smaller scale, but 'real' project".
I am definately going to watch your videos.
Thanks for sharing.
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