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frontpage Posted by WoodSlayR • 4d ago
frontpage Posted by WoodSlayR • 4d ago

TechCella 12V 320Ah LiFePO4 200A BMS Deep Cycle Battery w/ Bluetooth

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$320

$400

20% off
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TechCella has TechCella 12V 320Ah LiFePO4 200A BMS Deep Cycle Battery w/ Bluetooth on sale for $319.99. Shipping is free.

Thanks to Community Member WoodSlayR for sharing this deal.

About this Item:
  • TechCella 12V 320Ah LiFePO4 battery is built with automotive-grade A+ cells, featuring excellent voltage balance, ultra-low self-discharge, and stable performance. Delivers more than 320Ah actual capacity — more usable power than rated. Compact size (13.58×7.48×9.64 in) and 58.43 lbs weight make it perfect for RVs, off-grid systems, and trolling motors.
  • Equipped with a robust 200A smart BMS, this battery supports up to 300A peak discharge for 10s, ideal for high-power appliances and motor startups. It auto-recovers from overload protection within 30 seconds, ensuring continuous operation without power drop. With -20°C/-4°F to 60°C/140°F discharge range and charging cut-off below 0°C/32°F, it's built to perform safely in extreme conditions.
  • Supports 20A–160A charging current and fast charging with a 14.6V 50A LiFePO4 charger, fully recharging in just 6.4 hours. For deeply discharged batteries, we recommend using a charger with 0V activation to restore power safely. To protect battery life, start charging when capacity reaches 10–20% to avoid BMS low-voltage shutdown.
  • Built-in Bluetooth allows you to monitor battery status in real time via your smartphone.

Editor's Notes

Written by SaltyOne | Staff
  • Rated ~4.8 out of 5 stars from Amazon customers.
  • Offer valid for a limited time only / while supplies last.
  • At the time of this posting, our research indicates that this is $19.01 lower than the next best comparable online prices starting from $339.

Original Post

Written by WoodSlayR
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
TechCella has TechCella 12V 320Ah LiFePO4 200A BMS Deep Cycle Battery w/ Bluetooth on sale for $319.99. Shipping is free.

Thanks to Community Member WoodSlayR for sharing this deal.

About this Item:
  • TechCella 12V 320Ah LiFePO4 battery is built with automotive-grade A+ cells, featuring excellent voltage balance, ultra-low self-discharge, and stable performance. Delivers more than 320Ah actual capacity — more usable power than rated. Compact size (13.58×7.48×9.64 in) and 58.43 lbs weight make it perfect for RVs, off-grid systems, and trolling motors.
  • Equipped with a robust 200A smart BMS, this battery supports up to 300A peak discharge for 10s, ideal for high-power appliances and motor startups. It auto-recovers from overload protection within 30 seconds, ensuring continuous operation without power drop. With -20°C/-4°F to 60°C/140°F discharge range and charging cut-off below 0°C/32°F, it's built to perform safely in extreme conditions.
  • Supports 20A–160A charging current and fast charging with a 14.6V 50A LiFePO4 charger, fully recharging in just 6.4 hours. For deeply discharged batteries, we recommend using a charger with 0V activation to restore power safely. To protect battery life, start charging when capacity reaches 10–20% to avoid BMS low-voltage shutdown.
  • Built-in Bluetooth allows you to monitor battery status in real time via your smartphone.

Editor's Notes

Written by SaltyOne | Staff
  • Rated ~4.8 out of 5 stars from Amazon customers.
  • Offer valid for a limited time only / while supplies last.
  • At the time of this posting, our research indicates that this is $19.01 lower than the next best comparable online prices starting from $339.

Original Post

Written by WoodSlayR

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Top Comments

WoodSlayR
558 Posts
132 Reputation
12v LiFePo4 batteries are getting incredibly smaller and more power-dense by the year. Its size of 13.58"×7.48"×9.64" is incredibly small. It's about the size of the average 100ah battery of yesteryear, but 3 times as heavy while having over 3 times the power storage. I own 2 XZNY branded 280ah batteries that are also incredibly small, and very heavy.. they are about the same exact size as these but they dont have Bluetooth. Having bluetooth is such a nice feature to keep exact tabs of battery state of charge. The only review I've seen on you tube verifies this battery has true rated capacity but the company is pretty new so there isn't many reviews on youtube. I've seen some reviews for their 100ah batts and they all check out good so whatever's thats worth. 320 shipped for this much power with bluetooth in a very small package is a phenomenal deal.

For further reference for size comparision. Theres a MFUZOP 12V 100Ah battery here on slickdeals thats very close to the same size as this 320ah battery. These 2 batteries are very close to the same size but this has bluetooth and over 3 times the capacity which is pretty remarkable. the exact measurements of each battery is 13.6×7.5×9.6 vs 13x6.7x8.6
Justaguy154
123 Posts
19 Reputation
The website was registered 6 months ago.These companies don't care about getting caught. They just make up a new name and start a new website

68 Comments

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Original Poster
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2d ago
558 Posts
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2d ago
WoodSlayR
2d ago
Original Poster
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558 Posts
Quote from Protege :
Orange and black. What's the difference?

I'm offering $4,700 which comes out to the same $/ah
Look at how monstrous the external dimensions of those orange and black ones are compared to this. Its already a large difference then multiply that already big difference by 16,... you get the point.
on top of that, your still getting 640ah less power.
Last edited by WoodSlayR July 19, 2025 at 02:00 PM.
2d ago
519 Posts
Joined Sep 2018
2d ago
Protege
2d ago
519 Posts
Quote from WoodSlayR :
Look at how monstrous the external dimensions of those orange and black ones are compared to this. Its already a large difference then multiply that already big difference by 16,... you get the point.
on top of that, your still getting 640ah less power.
Something sounds fishy about putting 40 ah more into less space.
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Original Poster
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WoodSlayR
Yesterday
Original Poster
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558 Posts
Quote from Protege :
Something sounds fishy about putting 40 ah more into less space.
deleted
Last edited by WoodSlayR July 19, 2025 at 06:44 PM.
Original Poster
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Yesterday
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Yesterday
WoodSlayR
Yesterday
Original Poster
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558 Posts
Quote from Protege :
Something sounds fishy about putting 40 ah more into less space.
xzny, watt cycle, and this brand are 3 companies that come to mind that all have released this size and ah battery. All 3 of them also have teardown reviews on youtube you can see for yourself. Just because you think its fishy doesn't mean its not true. get with the times. this size will soon be the new standard
Last edited by WoodSlayR July 19, 2025 at 06:51 PM.
Original Poster
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WoodSlayR
Yesterday
Original Poster
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558 Posts
Quote from Protege :
Something sounds fishy about putting 40 ah more into less space.
4 prismatic 3.2v lifepo4 320ah cells side by side only measures 11.2" x 6.81" x 7.95" in overall size and thats what makes up the internal cells on all these 12v 320ah batteries on the market. Its actually more of a wonder why it took companies this long to finally put them into smaller cases.
Last edited by WoodSlayR July 19, 2025 at 06:42 PM.
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lee38jx
Yesterday
572 Posts
Quote from android :
No, the ResMed is pretty picky about voltage and such. Also, you could damage the CPAP it with bad voltage current. It's better to run it off the ResMed (or a third-party converter like this:
I want the humidifier and heated hose on default and ~24 hours of power. I do have https://www.amazon.com/dp/B0CGTGYDWY but have been looking for a LiFePO4 battery for airplanes (limited to 160Wh as well as a home one maybe in the 300 Wh range).
Stuff like the EASYLONGER on Amazon (B0BW8D3Z2B) is Li-ion... I really want to try LiFePO4 which has been very difficult to find in the past month of on and off searching.

Edit: It seems like that EASYLONGER thing on Amazon is actually LiFePO4 so I think my search is over. ES960 for home (B0BW8D3Z2B) and ES400 Air (B0C4PKWD36) for airplanes

Double edit: ONLY the ES960 is LiFePO4, the rest are Li-ion. So I am still looking for a 150Wh limited one for planes I guess...
Last edited by lee38jx July 19, 2025 at 08:02 PM.
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Nurgle
Yesterday
775 Posts
Quote from WoodSlayR :
Last time I mentioned a 4s4p configuration here on SD, people lost their minds. LOL a 4s4p is also 16 batteries to wire vs 12 48v 100ah server racks batteries. meaning a 4s4p config of 16 48v batts is going to be substantially more energy.
A 4s config with these would be 16kwh, 2 kwh more than a Tesla powerwall 3, wouldn't that be enough?

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Original Poster
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WoodSlayR
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Quote from Nurgle :
A 4s config with these would be 16kwh, 2 kwh more than a Tesla powerwall 3, wouldn't that be enough?
Probably... but "enough" is relative. Enough is going to be different with each persons needs or wants. I'd go as far as saying it would be enough for many.. maybe even most, but certainly not enough for all.

Will it be used primarily for just emergency power when the grid goes down temporarily, or do you want a sustained solar powered setup to live off grid completely? The answer to "how much is needed" or "enough" will differ wildly from person to person.
Last edited by WoodSlayR July 20, 2025 at 09:56 AM.

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