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Scream Power LiFePO4 12v 100ah

Bud Martin

Solar Wizard
Joined
Aug 27, 2020
Messages
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Does any one here have any experience withh is brand from Amazon?
I am trying to decide if I want to DIY or buy this one.
Thanks.
 
Does any one here have any experience withh is brand from Amazon?
I am trying to decide if I want to DIY or buy this one.
Thanks.
Seems to be small motorcycle batteries which explains the name.
Do they sell a 100Ah battery?
 
The Amazon link mentions a 1C MAX discharge BUT then mentions a 20AMP max draw. I'm inclined usually to believe the lower values on these "generic" batteries.
I've seen trolling motors pull 40AMPs so you may have a problem with this battery. Seems a large investment and you can probably make your own with better parts for less money if you are so inclined.
 
I was concerned about that but the seller confirmed 1C in the questions section. I would have liked to build it on my own but after a week of research, I couldn't find a recommended source of parts for a 40-60AH battery and charger that ships to Canada. If you can provide some links, that would be awesome!
 
I would still be cautious about that pack. Perhaps ask for documentation on ideal and max discharge on published papers or a link to the manufacturer.

With that said, I can't help with any suppliers that might ship to Canada. Have you attempted any of the standard players on Aliexpress or Alibaba?
 
I asked them some questions before posting here, they told me you can pull current from charging port but it can only handle 20A. I cannot find the user manual to clarify if the charging port can also be used as discharging port.

Specifications
1.Chemistry: Lithium Iron Phosphate (LiFePO4)
2.Rated voltage: 12.8V (Working voltage per cell: 3.2V)
3.Charge voltage: 14.4 - 14.6V
4.Cut-off voltage: 10V
5.Max continuous charge current: 1C
6.Max continuous discharge current: 1C
7.Peak discharge current: 2C
8.Operating temperatures: Standard 0°C~45°C(32°F~113°F), Discharge -20°C~65°C(-4°F~149°F),Storage -20°C~45°C(-4°F~113°F)

Features:
1. Charging connection port: Rated maximum current and voltage for charging:59A/14.6V;The maximum discharge current is 20A.

2. Power switch: Power switch controls the power of USB and voltage display.
3. BMS protection board: BMS provides battery charging and discharging and short circuit protection.
4. Extremely Low self-discharge: <3% for LIFEPO4 versus >20% for SLA Battery. Long Service Life: Its cycle can reach as long as 3000-5000 times which is 7-10 times of SLA (the SLA battery is 300-500 times only)
5. GREEN ENERGY BATTERIES: Made from 100% safe, nontoxic, renewable energy.Maintenance free.
 
I'm interpreting this to mean that you can get 1C from the terminals but only 20A from the charging port. Lets hope that's the correct interpretation.
 
Hey, I have a 100ah battery like this. It tested 100ah+. The battery disconnected at 9.5v. The front and the back of the battery has different weight. Weights about 12.5kg.
I'm thinking about to disassemble it and add an Overkill Solar BMS to have bluetooth and low temperature charge cutoff. And I'm planning to add a second 100ah but another of the same doesn't fit.
It's wider than I thought it would be..
It worked well with near 100a load and disconnected after ~5 seconds when i turned on the espresso machine (around 150a).
 
Is it charging back up for you after cutoff at 9.5? Mine has stopped charging beyond 10.2V. If you open it up, please post some videos/pictures here.
 
Is it charging back up for you after cutoff at 9.5? Mine has stopped charging beyond 10.2V. If you open it up, please post some videos/pictures here.
Yeah it works, I wish it turned off sooner. I left the inverter on for the night by accident.
 
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