FAMILY 01 · 51.2V LiFePO4 BATTERY PACK · 2 MODELS
51.2V 100Ah LiFePO4 Battery Pack, 5.12 kWh, 16S1P
The standard 48V pack for hybrid inverters, telecom huts and marine refits. The same 16S platform also comes in a 314Ah body at 16.08 kWh. Ten packs in parallel reach 51.2 or 160.8 kWh, with a separate RS485 bus for the pack chain.
5.12 kWh
100Ah at 51.2V, 16 cells in series
100 A
Continuous, charge and discharge
10 packs
Parallel limit, 51.2 kWh in total
6,000
Cycles to 70% end of life, 0.5C
WHO THIS IS FOR
A finished 48V pack, not a module waiting for a cabinet
This is the pack an installer drops into a rack, a telecom cabinet or a boat and lands four cables on. Breaker and BMS are inside, the terminals are on the front, and the CAN port speaks the 48V profile most hybrid inverters expect. Nothing else is needed to make it work.
It suits telecom and repeater sites, marine and vehicle refits, small off-grid cabins, and distributors who resell a 48V pack under their own label. It does not suit an outdoor wall, because the enclosure is IP20, and it does not suit anyone who wants a stacked tower in a hallway. For that, look at the low-voltage stacked battery, which is the same cell in a different body.
It also does not suit a site that has to charge below freezing. Charging starts at 0 °C and no heater is built in.
440 × 586 × 143 mm, 65 kg. Terminals, breaker and comms all on the front face.
TWO MODELS
Same voltage, same series count, three times the energy
Both builds are 16S1P on a 3.2V cell and both sit at 51.2V. The only difference is cell capacity, and it changes the numbers more than people expect: the 314Ah body carries 3.14 times the energy for 1.63 times the weight.
| Model | Energy | Cell config | Max charge | Max discharge | Weight | Dimensions L × W × H |
|---|---|---|---|---|---|---|
| 51.2V 100Ah | 5.12 kWh | 3.2V 100Ah / 16S1P | 100 A | 100 A | 65 kg | 440 × 586 × 143 mm |
| 51.2V 314Ah | 16.08 kWh | 3.2V 314Ah / 16S1P | 100 A | 200 A | 106 kg | 440 × 742 × 230 mm |
Operating voltage 44.8–57.6V on both. Cycle life 6,000 at 25 °C, 0.5C charge and discharge, 90% depth of discharge, measured to 70% of beginning capacity. Design life 10 years. IP20, BMS and breaker inside. Humidity up to 95%, non-condensing. Altitude rated to 2,000 m.
CONTINUOUS POWER
What inverter can actually sit on this pack
A 100A limit at 51.2V is 5.12 kW, and that is the number to size the inverter against, not the 5.12 kWh headline. Most 5 kW hybrid inverters draw just over 100A at low battery voltage, which is why 5 kW is the practical ceiling on the small pack rather than a comfortable match.
| Item | 51.2V 100Ah | 51.2V 314Ah | Why it matters |
|---|---|---|---|
| Discharge power | 5.12 kW at 100 A | 10.24 kW at 200 A | Size the inverter at or below this, not at the kWh rating |
| Charge power | 5.12 kW at 100 A | 5.12 kW at 100 A | The 314Ah charges at the same rate as the small pack, so it takes 3.1 hours from empty |
| Practical inverter | Up to 5 kW | 8 to 10 kW on discharge | On the 314Ah the inverter can be twice the charge rate; the pack fills slowly but empties fast |
| Parallel bank | 10 packs · 51.2 kWh · 650 kg | 10 packs · 160.8 kWh · 1,060 kg | The catalogue rounds the 100Ah bank to 50 kWh; 10 × 5.12 is 51.2 |
| Bank discharge | 1,000 A theoretical | 2,000 A theoretical | The inverter’s battery input is the real limit long before this |
Four packs, equal-length cables, one master on the inverter bus and three slaves on RS485(B).
Building a bank: three rules
One master. The master is the only pack wired to the inverter’s CAN or RS485(A). Every other pack joins on RS485(B) and takes a slave address. Two masters on one bus is the most common wiring fault we see.
Equal lengths. From the busbar to pack one and from the busbar to pack four must be the same cable length in both polarity. Otherwise the nearest pack carries more current, and on a ten-pack bank that pack reaches end of life first.
One fuse per pack. The breaker inside each pack protects that pack. It does not protect the cable to the busbar, so each parallel run needs its own fuse or breaker at the busbar end.
COMMUNICATION
Four ports, and two of them are RS485
Two separate RS485 buses is the reason ten packs can sit on one inverter without the pack chain competing with the inverter for bandwidth. One bus talks to the inverter, the other talks down the row of packs.
| Port | What it connects to | What you have to confirm |
|---|---|---|
| CAN | The inverter, carrying cell voltage, temperature, SOC and current limits | The inverter expects a 48V-class CAN profile. Send us the model and we return the matching map |
| RS485 (A) | The same data to an inverter that speaks Modbus instead of CAN | Baud rate and register version. Some inverters accept one protocol only, so pick before you wire |
| RS485 (B) | The other packs in the bank, pack to pack | Address setting. One pack is the master and the rest are slaves; the master is the one on the inverter bus |
| RS232 | A laptop for commissioning and firmware | Legacy serial. If you have no RS232 port on site, a USB adapter is needed and we do not ship one |
CERTIFICATION
What the paperwork covers
UN 38.3
Transport test summary for cell and pack. A 65 kg Class 9 pack needs this plus the state of charge declaration before any forwarder will load it.
CE & RoHS
Issued per model. A report covering the 100Ah body does not cover the 314Ah one, because the cell and the BMS current settings differ. Ask for the number that matches what you are buying.
IEC 62619
The one industrial buyers in the Gulf and the EU actually ask for on a bare pack. Tell us the destination and we will confirm whether we hold it for this model rather than assume it transfers from another family.
TYPICAL CONFIGURATIONS
Three builds we ship most often
Examples, not guarantees. Sizing depends on the load profile and the depth of discharge you are willing to run.
Four packs on a shelf in a repeater hut, one 48V rectifier, one DC distribution panel.
TELECOM HUT
4 × 100Ah · 20.48 kWh
A 48V rectifier with a 400 W continuous load, which is a repeater and a small microwave link. About 46 hours to 90% depth of discharge, enough to ride out a two-day grid outage without starting the generator.
260 kg · 51.2V bank
BOAT OR RV
1 × 314Ah · 16.08 kWh
One pack on a 3 kW inverter, drawing about 4 kWh a day for a fridge, lights and electronics. Three and a half days of autonomy, and it still fits a 742 mm deep locker.
106 kg · 440 × 742 × 230
OFF-GRID CABIN
2 × 100Ah · 10.24 kWh
A 3 kW hybrid inverter with 2 kW of panels. A 250 W base load runs about 36 hours, so a cloudy two-day stretch is survivable without a generator.
130 kg · two 143 mm deep packs
BUYING INFORMATION
What the order actually looks like
| Minimum order | 50 units per model. A mixed pallet of both bodies is possible once the total reaches a full load. |
| Lead time | 15 to 20 days after the deposit clears, counted from payment. |
| Packaging | One pack per carton with foam at the corners, two cartons per pallet. The 65 kg build is a two-person lift out of the carton; do not cut the straps until the pack is where it will sit. |
| Gross weight | Add about 8 percent to the net weight for carton and pallet. |
| HS code | 8507.60, lithium-ion accumulators. Confirm with your broker before the first shipment. |
| Trade terms | FOB Ningbo or CIF to your port. EXW is available if you have your own forwarder. |
INSTALLATION NOTES
Six things the installer needs to know
- IP20 means a room, not a wall. Fine in a plant room, a cabinet or a locker. Not fine on an outside wall under a carport, and not fine where a hose is used.
- The breaker is a switch, not a fuse. A 100A DC breaker inside the pack protects the pack. It does not protect the cable run to the inverter. Fit a DC fuse or breaker at the inverter end as well.
- No charging below 0 °C. There is no heater. A cold garage in January will simply refuse to charge, and repeated attempts do not warm it up. Heat the room or accept the lost hours.
- Equal cable lengths, both directions. On a bank, keep the positive run to pack one and the negative run from the last pack the same length, or the nearest pack does more work and ages faster.
- Same model, same age. Do not add a new pack to a bank that has been running a year. The new pack has a lower internal resistance and will carry more of the current until it catches up. If you must, derate the bank.
- 2,000 m ceiling. The pack is rated to 2,000 m with no derating clause printed. If the site is higher, tell us at enquiry.
Front face: DC breaker, positive and negative terminals under a cover, and the four comm ports on one plate.
QUESTIONS
Six things buyers ask about this family
Will it run a 5 kW inverter?
Yes, but it is at the limit rather than comfortable. 5 kW at 51.2V is 98A, just under the 100A continuous rating, and a real inverter draws more than its nameplate at low battery voltage. If your inverter is 5 kW and you expect to run it hard, take the 314Ah, which discharges at 200A. If it is 3 to 4 kW, the 100Ah pack is a clean match.
Can I mix a 100Ah and a 314Ah pack in one bank?
No. The two bodies have different capacities on the same 16S string, so they take different currents for the same voltage and the BMS units will fight over sharing. A bank is all one model. This is also why the parallel address setting is per model, not per bank.
How many can I parallel, and what limits it?
Ten packs, which is 51.2 kWh on the 100Ah body and 160.8 kWh on the 314Ah. In practice the inverter’s battery input current caps you long before ten. A 5 kW inverter draws about 100A, which one pack already supplies, so a bank of ten is only worth building when the inverter is large or the autonomy requirement is measured in days.
Is it a drop-in replacement for a lead-acid bank?
Mechanically and electrically, mostly. The voltage window of 44.8 to 57.6V sits inside what a 48V lead-acid charger expects, so an existing charger will usually work. What you must change is the charge profile: a lead-acid setting will hold absorption too long and the BMS will disconnect on cell overvoltage. Set the charger to a lithium profile with the limits from our datasheet, or do not fit it.
What happens below freezing?
Charging is blocked below 0 °C and there is no internal heater. Discharge continues down to −20 °C on the datasheet, but our stacked family built on the same 100Ah cell prints −10 °C, so plan the site at −10 or above until we have a low-temperature discharge report for this pack. Say so at enquiry and we will send what we hold.
What is the cycle life, and the warranty?
6,000 cycles at 25 °C, 0.5C charge and discharge, 90% depth of discharge, measured to 70% of beginning capacity. Note that 70%, not 80%: it is a harder test than most datasheets publish, and it is the figure we will stand behind. Design life is 10 years. The pack page prints no warranty term, so ask us for the term tied to your duty cycle before the order rather than reading a number off a brochure.
QUICK QUOTE
Send the inverter model and the daily load
Tell us the inverter brand and model, the daily consumption in kWh, how many packs you want in the bank and the lowest temperature the site sees. We come back with the model, the bank size and a price, usually within 12 hours on a working day.
Related families: 12V / 24V Lead-acid Replacement · Low-Voltage Stacked Battery · All battery packs · Back to all products