RVPOZWER via AliExpress [aliexpress.us]. RVPOZWER 12V 100Ah LiFePO4 Battery 1280Wh for Solar, RV, Marine $96 + Free Shipping from US warehouse.
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Key Features:
- Capacity: 100Ah, 1280Wh energy storage.
- Chemistry: LiFePO4 (Lithium Iron Phosphate) for safety and long life.
- Voltage: 12.8V nominal, compatible with 12V systems.
- Power: 100A max continuous discharge current.
- Protection: Built-in BMS with overcharge, over-discharge, and short-circuit protection.
- Durability: IP55 rated, over 6000 cycle life.
- Weight: Lightweight at approx. 10.45kg (23 lbs).
- Certification: CE certified for safety and reliability.
https://www.aliexpress.us/item/32...52810.html 
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How does temperature affect a LiFePO4 battery?
Some Chinese batteries are hit or miss on quality or cell quality. Different brands can be night and day different wrt BMS quality, cell (new vs used, A+, B+ etc). I haven't seen any reviews for this brand, do a search, see if there are teardowns to give you insight.
IMHO for $100 its a good value, LifePo4 are pretty safe.
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