Lithium batteries are getting cheaper

Shrek · 2024-08-18T20:35:16+0100

$30
Amazon.com: NERMAK 12V 7Ah (7.2Ah) Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar Powar, Lighting, Power Wheels, Fish Finder and More, Built-in 8A BMS : Automotive
compared to around $20 for lead-acid

Now if it is true that they last

2000 cycles

compared to

300-500

for lead-acid, one might argue that lithium batteries are cheaper in the long run for UPS use.

Bill_Bright · 2024-08-18T21:39:30+0100

Hmmm, interesting that it says 12.8V on the label. I know most small 12VDC chargers actually output somewhere between 13.4 and 13.7DC ± a .1 or .2 (some up to 14.4V). And I know most standard 12V SLA batteries typically read a bit above 12V when new and fully charged. So it should not be a problem. I just don't recall seeing anything other 12V printed them.

After a little digging I see this one is even $8 cheaper and claims 3000 deep charge cycles.

System Name	CyberPowerPC ET8070
Processor	Intel Core i5-10400F
Motherboard	Gigabyte B460M DS3H AC-Y1
Memory	2 x Crucial Ballistix 8GB DDR4-3000
Video Card(s)	MSI Nvidia GeForce GTX 1660 Super
Storage	Boot: Intel OPTANE SSD P1600X Series 118GB M.2 PCIE
Display(s)	Dell P2416D (2560 x 1440)
Power Supply	EVGA 500W1
Software	Windows 11 Home

System Name	Brightworks Systems BWS-6 E-IV
Processor	Intel Core i5-6600 @ 3.9GHz
Motherboard	Gigabyte GA-Z170-HD3 Rev 1.0
Cooling	Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory	32GB (4 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s)	EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage	Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s)	Samsung S24E650BW LED x 2
Case	Fractal Design Define R4
Power Supply	EVGA Supernova 550W G2 Gold
Mouse	Logitech M190
Keyboard	Microsoft Wireless Comfort 5050
Software	W10 Pro 64-bit

Lithium batteries are getting cheaper

Shrek

Bill_Bright