Chins 24V 200AH 200A

eXodus

Photon Sorcerer
Joined
Jul 27, 2020
Messages
998
Just found this one on Amazon:

Rated Capacity (0.2C): 200Ah / 5120Wh
Cycle life: 2000+ cycles at 80% discharge depth
Rated voltage: 25.6V
Charge voltage: 28.4V - 29.2V
Depth of Discharge (DoD): 100%
Standard charge current: 50A
Charging time: Approximately 5 hours
Max continuous charge current: 100A
Max continuous discharge current: 200A
Peak discharge current: 600A (Duration: less than 5 seconds)
Operating temperatures: Charge 0°C~50°C(32°F~122°F),
Discharge -20°C~60°C(-4°F~140°F), Storage -20°C~50°C(-4°F~122°F)
Impedance: ≤ 6mΩ

At currently $1700 seems like a good value. Yes I know it doesn't has low voltage disconnect. Nothing I'm concerned about.

Anyone know if it pulls full capacity?
 
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NOLA_Castle

Learning Everyday....
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May 26, 2021
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340
Location
NOLA
I bought it View attachment 74290

Started testing with my 3000w Growatt.

View attachment 74291
Charging with 50A then unplugging the RV and discharge later with 20A
You should be fine. I have 2 unit 12V -200Ah and 1 unit 24V-200Ah CHINS batteries. All mine are meeting the specification including the monthly self-discharge rate. I did the 0.1c capacity test on all three as well.
 

eXodus

Photon Sorcerer
Joined
Jul 27, 2020
Messages
998
Screenshot_20211204-055136.png

Looking good :) 5.1kwh output before it shut down.

So the rated capacity is 5120wh. I've got my inverter shut off set at 22.0V - the battery BMS shuts down at 21.6V so there would be probably still be another AH or two in there. Further the Growatt only measures the output power - so it is not counting it's a part of it's own standby use.

I've tested with a load of 400w (my absorption Fridge) and ran the 13500BTU A/C unit in between (that's the tow spikes in the late afternoon of the day) when I was working on something in the RV.

The battery passed the first discharge test.

Charging it back up now to see how efficient it is while charging.
 
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eXodus

Photon Sorcerer
Joined
Jul 27, 2020
Messages
998
Screenshot_20211204-105650.png

Imported 6.3kwh from the grid to recharge the battery. That includes the charger inefficiency and the self consumption over the 5hrs from the RV and Charger. Which are usually around 60w per hour. So roughly 300wh are not going towards charging

Meaning about 6kwh to recharge 5.2kwh
about 86% efficiency for my system.

Seems like the Growatt data logger is glitching. It was charging the whole time.
 
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