[30-Day Pre Sale] Humsienk 48V 100Ah 3U Server Rack LiFePO4 Battery | 3A Active Balancing | 5.12KWh for Home Storage, Off-grid & UPS

Humsienk PPS Expansion Cable and 48V 100Ah Server Rack Battery on a white background

[30-Day Pre Sale] Humsienk 48V 100Ah 3U Server Rack LiFePO4 Battery | 3A Active Balancing | 5.12KWh for Home Storage, Off-grid & UPS

Name: [30-Day Pre Sale] Humsienk 48V 100Ah 3U Server Rack LiFePO4 Battery | 3A Active Balancing | 5.12KWh for Home Storage, Off-grid & UPS
Rating: 4.85 (55 reviews)

~~$899.99 USD~~ $799.99 USD SAVE $100.00 USD

Tech Specs
Downloads

Tech Specs

Mechanical	Shell Type	Metal
	Size	440 x 500 x 133 mm / 17.32 x 19.69 x 5.24 in
	Weight	43.75+0.5kg/96.45 +1.10 lb
Electrical Characteristics	Nominal Voltage	51.2V
	Nominal Capacity	100Ah
	Energy	5120Wh
	Terminal	M8
	Cycle Life	6000@DOD80%
	Months Self Discharge	s3%/Month
	Efficiency Of Charge	100%@0.2C
	Efficiency Of Discharge	96~99%@0.5C
Standard Charge	Charge Voltage	57.6V±0.2V
	Charge Mode	CC/CV
	Charge Recommended Current	20A
	Max. Continuous Charge Current	100A
Standard Discharge	Discharge Recommended Current	50A
	Max. Continuous Discharge Current	100A
	Discharge Cut-Off Voltage	40V
Environmental	Charge Temperature	32°F~131°F/0℃C~55°C
	Discharge Temperature	-4°F~149°F/-20°C~65°C
	Storage Temperature	-4°F~113°F/-20°C~45°C
	Ingress Protection Rating	IP65

Downloads

Tech Specs

User Manual

Frequently Asked Questions

What is a rack battery?

Can I connect multiple rack batteries in parallel?

Do rack batteries come with a communication protocol?

What is the lifespan of a rack battery?

Do I need a special inverter or BMS?

Are rack batteries wall-mounted or floor-standing?

51.2V 100Ah Server Rack LiFePO4 – 3U Design, 5.12kWh, Smart Monitoring with Bluetooth & CAN/RS485

Equipped with RS485, RS‑232, and CAN bus for seamless BMS communication, plus built‑in Bluetooth for real‑time monitoring via smartphone – you get full control over voltage, current, temperature, and state of charge at your fingertips. Grade A cells, robust metal housing, and intelligent protections ensure long cycle life, safe operation, and easy integration – the perfect scalable solution for professional and residential energy needs.

Humsienk 51.2V 100Ah server rack LiFePO4 battery – 3U chassis, 5.12kWh, RS485/RS‑232/CAN bus, Bluetooth monitoring, Grade A cells, ideal for telecom and home energy storage.PC

3U 5.12kWh Server Rack LiFePO4 – Smart BMS, Bluetooth, CAN/RS485, Supports 16P Parallel

Compact 3U rack‑mounted battery delivers 5.12kWh of reliable LiFePO4 power with EV‑grade A+ cells and intelligent 100A BMS – perfect for telecom, data centers, solar storage, and backup systems. Real‑time monitoring via Bluetooth and seamless integration through RS485, RS‑232, and CAN make it easy to track voltage, current, and temperature, while supporting up to 16 units in parallel for scalable capacity up to 81.92kWh. Space‑saving design, robust safety protections, and long cycle life ensure a future‑proof energy solution that grows with your needs – simple, smart, and built to last.

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Grade A+ Cells & Smart BMS – 15000 Cycles, 10+ Year Lifespan, Premium Energy Density

Powered by genuine Grade A+ LiFePO4 cells, Humsienk’s 51.2V 100Ah battery delivers industry‑leading 53.08Wh/Ibs energy density and an outstanding 15000+ deep cycles at 60% DOD – ensuring more than a decade of reliable service with minimal degradation. The intelligent BMS provides comprehensive protection against over‑charge, over‑discharge, over‑current, short circuits, and low temperatures, keeping your investment safe and your equipment running smoothly.

3A Active Balancing – 100× Faster than Passive, Maximizes Battery Life & Efficiency

Humsienk’s 3A active balance technology is 100× faster, ensuring all cells stay perfectly matched for peak performance and consistent power output. Faster balancing means less heat, less energy waste, and significantly extended cycle life – no more premature degradation or capacity loss that plagues ordinary batteries with passive systems. Experience superior efficiency and longer runtime with intelligent active balancing – the smarter way to protect your lithium battery investment and get the most out of every charge.

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16× Grade A+ Cells – Uncompromising Design & Quality for Perfectly Balanced Power

Humsienk batteries are built with 16 precision‑matched Grade A+ cells, ensuring every cell delivers identical capacity and internal resistance – giving you perfectly balanced power supply, no weak links, and maximum energy extraction. Our relentless pursuit of design and quality means each pack undergoes rigorous selection and assembly, resulting in superior thermal stability, reduced imbalance, and significantly extended cycle life – so you enjoy consistent, dependable performance for years. From materials to craftsmanship, every detail matters – because a balanced battery is a reliable battery, and reliability is what sets Humsienk apart from the rest.

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Humsienk_48V_100Ah_LiFePO4_Battery_3U_Server_Rack_LiFePO4_Battery_High_QualitY_Cells_MP

Bluetooth Smart Control – Monitor & Manage Your 51.2V 100Ah Battery Anytime, Anywhere

Take full command of your Humsienk 51.2V 100Ah LiFePO4 battery via Bluetooth – view voltage, current, temperature, and remaining capacity (5120Wh) live on your smartphone with the intuitive app. The built‑in ON/OFF switch adds an extra layer of safety, letting you cut power remotely, while smart alerts notify you of abnormal conditions so you can act fast to prevent downtime. No more climbing into tight spaces or guessing your battery status – wireless monitoring puts total control in your hands, making energy management simpler, safer, and more efficient.

Humsienk_48V_100Ah_LiFePO4_Battery_3U_Server_Rack_LiFePO4_Battery_Bluetooth_Function_PC

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CAN / RS485 / RS232 Ready – Seamless Integration with 15+ Leading Inverter Brands

Eliminate compatibility guesswork – Humsienk batteries support CAN, RS485, and RS232 communication, ensuring plug‑and‑play connectivity with top brands like Victron Energy, Deye, Growatt, SMA, PYLONTECH, Solis, and SOFAR, among many others. Effortlessly integrate into new or existing solar, backup, or off‑grid systems with full BMS monitoring and data exchange – no costly adapters or complex configuration required. Enjoy peace of mind knowing your battery speaks the same language as your inverter, maximizing performance, safety, and system efficiency from day one.

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Humsienk_48V_100Ah_LiFePO4_Battery_3U_Server_Rack_LiFePO4_Battery_CAN_rs485_RS232_Communication_MP

5.12kWh Multi‑Purpose LiFePO4 – Power Server, Solar, Off‑Grid & Home Storage with One Reliable Battery

One battery covers it all – Humsienk’s 5.12kWh 51.2V 100Ah LiFePO4 is purpose‑built for server rooms, off‑grid cabins, solar systems, and home backup, delivering consistent, maintenance‑free energy wherever you need it. Its compact 3U rack‑mount design saves space, while built‑in CAN/RS485 communication ensures seamless integration with leading inverters – making it the versatile powerhouse for residential and professional installations.

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Customers praise this 48V 100Ah LiFePO4 server rack battery for exceptional value and build quality. Reviews highlight "great quality battery" with effective active balancing and reliable performance in off-grid systems. Some noted short included cables, weak Bluetooth range, and initial cell imbalance. Overall, shoppers report strong satisfaction and plan to purchase more.

5 stars: 47 (85%)
4 stars: 8 (15%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Product is as advertised

Product is as advertised. I’ve only self checked the batteries for now as I building complete 8KW off grid system and not done yet.

Been working great

Been working great. I have 2 and plan on getting 2 more

Great

Been working great

High quality and great service

I a. Impressed with these batteries. Great quality. And the company is amazing. Customer support is responsive and accommodating. Highly recommend. I will build out my entire battery bank with these.

Good build

I purchased two batteries,,the package is good the only thing is the terminal short out my battery . The wire groundout on the 4 screw that hold the terminal down

I am really impressed with the quality of the Humsienk 48v 100Ah 3UServer Rack Battery

I am really impressed with the quality of the Humsienk 48v 100Ah 3UServer Rack Battery.
I have installed it on a Dolly or Hand Truck. I also posted a video on my Youtube channel. http://www.youtube.com/@RednekGeeks

I have only been workingthis battery for a few days

I have only been workingthis battery for a few days. Seems to work as advertised. Packaging was good and it arrived quickly in fine condition. My only complaint
Is that the included wires were a bit on the short side.
I plan on expanding my system and will be ordering more soon.

Works great with my xw pro 6848 inverter charger

Works great with my xw pro 6848 inverter charger.

Very nice quality

Very nice quality, wish had a few more, nice price, fixed income trying to lower electric bill

Batteries work well but....

So far the batteries have been holding up. My house has been off the grid for a few weeks now. I bought 2 batteries that are connected in parallel now. However, I noticed that the voltage vs state of charge doesn't match up for both batteries.
Explanation: Battery A is at 94% with a voltage of 53V and battery B is at 84% with a voltage of 53V. So the voltages of the batteries are normally close but the battery percentage is different. I am not sure if that will eventually cause any issues

Great value for the price

Overall, I'm impressed with the build quality/value when compared with other server rack batteries. There are a few things that can be improved, but it integrates well with my other batteries. The raised screw heads on the terminals should be re-designed so that they are recessed, and can't be inadvertently contacted, potentially causing a short.

On my initial charge, the cell voltages differed by over 200mv at the top. I did a capacity test from the initial charge & got 100.365 ah, but I had it set to cut off at 44.5v, instead of letting the BMS take it out. On the subsequent charge, cell differential was over 250mv at the top. I let it sit overnight, so the active balancer had some time to work. Next morning I took the cells up to 3.6v+ with a bench power supply set at around .25a. All cells were within 6mv, which is impressive.

I've ditched the factory app for monitoring in favor of the TDT "BMS meta" app, which allows control of more of the battery parameters.

At this price point, it's a winner - just change those screw heads on the terminals!

I have not had the opportunity to use the battery yet !

I have not had the opportunity to use the battery yet !! From what i can tell it seems to be a great quality battery . The experience with the order and shipping was good !!! I actually plan on ordering another in a week if the sale price is still on. I can only buy parts for my system as i can afford them so its a piece meal event !!!

Good working

Good working battery

Phenomenal Battery

Very good value for a lithium battery

Great product & well made

Great product & well made.

Goodquality for a good price

Good

Great value!!

Love this battery great value!! Will be adding more of these to my system soon!!

Buenas baterias

Good controls

Good controls, good bluetooth. Storeslots of energy. The app allows you to change the low voltage cutoff, which is great.

Muy satisfecho con la entrega y el producto recomendado un 100%

Quick shipping

I'm impressed with this battery!

The only reason for 4 stars is that the unit arrived dented in the top cover. It looks like at fedex something poked through the box and dented the top cover. There was no internal damage to the battery. I popped off the cover and banged the dent out of it. You can't even tell that it had a dent. While I had the cover off, I looked inside the unit and it is very well made.