Product Overview
The B-16KWH is a floor-standing battery storage power station built around a 51.2V, 320Ah LiFePO4 pack — 16.38kWh in a single cabinet. The cells are arranged 16S1P and managed by an internal BMS, so what arrives is a finished unit with its own enclosure, display and connection terminals rather than a stack of modules to wire together.
It is built to be moved and placed. The cabinet runs on casters with lifting handles at the top, carries a vertical LED status strip and a colour touchscreen on the front panel, and vents through a grille along the bottom edge. Side connection ports keep the DC cabling tidy, and the matte white enclosure sits quietly in a utility room, garage or plant cupboard.
In a house it works downstream of a hybrid inverter: the array charges it first, the grid or a generator tops it up when solar is short, and the inverter draws from it in the evening or during an outage. Because it is built to cycle every day rather than to sit at float, it replaces the bank of lead-acid deep cycle batteries that would otherwise fill the same corner — without the watering, the venting or the mid-life replacement.
It suits sites that are not houses, too. A workshop, a farm building, a small retail unit or an off-grid cabin can run from one cabinet and add a second when the load grows.
Battery Management & Safety
The battery management system is the part that decides whether a storage pack lasts. It watches cell voltage and temperature continuously, stops charging at the top of the window and discharge at the bottom, limits current when a load pulls too hard, and manages heat inside the cabinet. When something drifts, the BMS acts before the inverter notices.
Because this is a deep cycle lithium battery rather than a bank of lead-acid deep cycle batteries kept at float, the protection is tuned for daily full cycles: the pack expects to be worked, not held at float, and the limits are set with that rhythm in mind.
Chemistry carries a lot of the safety argument. LiFePO4 is the least reactive of the common lithium chemistries, which is why it dominates indoor home storage — no liquid electrolyte to top up, no venting to design around, and far less heat generated in normal cycling than with older lithium mixes.
If the BMS does intervene, the response is straightforward. Read the fault on the front screen, remove the load that caused it, let the pack settle and restart. A fault that repeats usually points at something outside the battery — an inverter setting, a loose terminal or a charger outside its window — rather than a pack that has failed.
What the BMS cannot do is compensate for a poor installation. A cable that is too thin for the run, a breaker that is undersized or an inverter configured for a different battery type will all surface as battery faults. Check those first.
Operating Conditions & Installation
| Operating temperature (charge) | 0 °C ~ 45 °C |
| Operating temperature (discharge) | -20 °C ~ 65 °C |
| Storage temperature | 0 °C ~ 40 °C |
| Protection rating | IP54 |
| Dimensions (L×W×H) | 919.52±2 × 525±2 × 255±2 mm |
| Net weight | 125kg ±2.5kg |
| Terminal | M8 |
| Communication protocol | RS485 (optional) |
| Optional functions | Bluetooth, Self‑heating, DC breaker |
| Internal resistance | |
| Self-discharge | Standby loss below 1W |
Handling & Site Preparation
- Measure the route before delivery — doorways, stair turns and narrow hallways decide whether this battery storage power station rolls in on its casters or needs a pallet truck and two people.
- Two people for the lift — the cabinet should travel on a hard, level floor and be raised by two people wherever it has to leave the ground.
- Clear the base — the ventilation grille along the bottom edge needs open air, so do not wedge the cabinet into an alcove with no gap underneath.
- Reach at the front — leave room in front of the panel so the screen, the ports and any breaker can be reached without moving the unit.
- Keep it dry and shaded — a plant room or garage wall away from standing water and direct sun keeps the cabinet inside the conditions it was built for.
- Short, tidy DC runs — keep the cable from the inverter as short as the layout allows and route it clear of walkways; a long, loose run costs voltage and invites damage.
Parallel Expansion
Parallel connection is what turns this cabinet from a single battery into a system block. Up to 16 units can be tied together to reach 4,800Ah and 240kWh, and each one stays at 51.2V, so the DC bus the inverter sees never changes as the bank grows.
That suits staged projects. A household can start with one cabinet and add a second when an EV charger or a heat pump arrives; a small business can bring another unit online for a new cold room without replacing what is already installed. The spending follows the load instead of arriving all at once.
It also simplifies stock and service. One part number covers every system size, so an installer keeps a single set of spares and a service visit does not depend on which capacity the customer happened to buy.
Plan the physical side early. A parallel bank is a row, so reserve the floor and wall space for the cabinets you intend to reach, keep the DC cable lengths between cabinets matched, and allow a breaker per unit if you want to isolate one cabinet without shutting the bank down — a DC breaker is available as an option.
Commission one cabinet at a time: bring the first unit online, check it on its own display, then add the next. Because each unit is the same 48V LiFePO4 battery, expanding the deep cycle battery storage bank does not disturb the voltage the inverter already sees.
Charging & Daily Operation
- Solar first — on a hybrid inverter the array covers the loads and refills the cabinet before the grid is called on.
- Grid top-up — through a run of grey days the inverter takes the pack back to full from the mains, ideally on an off-peak tariff.
- Generator input — on an off-grid site the generator charges through the inverter, which is what keeps the battery storage power station usable through a short winter day.
- Evening discharge — once the array falls away the inverter draws from the cabinet, so the evening and overnight load never touches the grid.
- Seasonal use — if the property is a holiday home, deep cycle battery storage between visits is mostly about idle drain, and a pack that barely draws when it is idle is what makes that work.
Specifications
- 8,000 cycles at 0.2C, 25 °C and 80% depth of discharge — the rating is quoted with its test conditions attached. That is the number that decides whether the cabinet ever pays for itself, and it is matched to a design life of ten years at a daily cycling rhythm. - 16.38kWh in a single cabinet — enough stored energy to carry a house through the evening and the overnight peak, so one unit is a working system rather than a token backup. - 200A continuous, 300A pulse — the surge a pump or a compressor pulls at start-up is covered without the BMS cutting the load, which is the usual failure point of an undersized 48V LiFePO4 battery. - 99.5% charge efficiency at 0.2C and 96–99% discharge efficiency at 1C — almost everything you put in comes back out, and very little of it turns into heat in the room. - Nothing to maintain — the enclosure is sealed, the BMS does the housekeeping, and there is no watering, no equalise charge and no terminal corrosion to chase. - A chemistry picked for indoor storage — a LiFePO4 lithium battery holds its capacity, tolerates warm plant rooms and is the least temperamental of the common lithium chemistries, which is why it is the default for home cabinets. - Built to be paralleled — growth means another identical cabinet rather than a new design, a new inverter setting or a new set of spares.
| Model | B-16KWH |
|---|
| Battery type | LiFePO4 (16S1P) |
| Nominal voltage | 51.2V |
| Nominal capacity | 320Ah |
| Total energy | 16384Wh (16.38kWh) |
| Cycle life | 8000 cycles @0.2C/25°C/80%DOD |
| Charge voltage | 58.4V |
| Discharge cut-off voltage | 43.2V |
| Standard charge current | 80A |
| Max charge current | 200A |
| Continuous discharge current | 200A |
| Max pulse discharge current | 300A ( |
| Charge efficiency | 99.5% @0.2C |
| Discharge efficiency | 96‑99% @1C |
Ordering & Delivery
- Tell us what the cabinet is going into — a grid-tied house, an off-grid cabin or a commercial building — and the make and model of the inverter it will work with, so the charge profile can be confirmed before dispatch.
- Decide the optional functions at order time; they are built into the unit, so this is the moment to choose them rather than a later upgrade.
- Set the first quantity and the expansion path. If a second cabinet is likely within a year, say so now, and tell us whether the site is daily cycling or seasonal deep cycle battery storage — it is easier to plan cable lengths and floor space before the first unit is on the wall.
- Lead time: stock orders are prepared in 3–7 days, and custom builds take about 35 days.
- Shipping: swift delivery from local stock, 3–7 days in transit.
- Warranty: every cabinet carries a 5-year warranty.
- Every LiFePO4 lithium battery cabinet is checked before it leaves the warehouse, and the team stays available for fitting questions and after-sales help.
About Our Company
Xinyubattery is the brand of Shenzhenshi Xinyu Newenergy Technology Co.,LTD, a Shenzhen-based company founded in 2016 and working in green power solutions for more than ten years. Through a vetted network of production partners, we bring a broad range of power products together in one place and consolidate each order for you. Products are checked before dispatch, packed for export and shipped from local stock, and our team stays available for technical advice, fitting questions and after-sales help.
FAQ
What are the core specifications?
A 51.2V, 320Ah deep cycle lithium battery with 16,384Wh (16.38kWh) of stored energy, built from LiFePO4 cells in a 16S1P arrangement. It charges at 58.4V, discharges to a 43.2V cut-off and is rated for 8,000 cycles at 0.2C, 25 °C and 80% depth of discharge. The full electrical and mechanical figures are in the specification tables.
Does it support parallel connection?
Yes. Up to 16 cabinets can run in parallel, and every unit stays at 51.2V, so you add capacity without changing the DC voltage your inverter works with — unlike adding another battery to a series string of deep cycle batteries. Plan the row and the cable lengths before the first cabinet goes in.
Is low-temperature operation supported?
Discharging is rated down to -20 °C, and charging starts at 0 °C. In a cold plant room that charging window is the limit to plan around: the optional self-heating function warms the cells to about 10 °C above zero so normal charge and discharge can resume. If the cabinet will live in an unheated building, specify self-heating when you order.
What safety certifications does it have?
The LiFePO4 lithium battery is tested to UN38.3 for transport, IEC62619 for stationary battery safety and RoHS for restricted substances, and the built-in BMS adds overcharge, over-discharge, over-current and thermal protection on top. Ask us for the current test documentation if your installer, inspector or insurer needs it on file.
What charging methods are supported?
Three: solar array, utility grid and generator. On a hybrid inverter the array is used first, the grid or the generator fills in when solar is short, and the cabinet discharges to the loads once the array drops away. Any combination works — solar does not have to be present for the cabinet to be charged.
What is the protection rating?
IP54. That is protection against dust ingress and against water splashing from any direction, which suits a garage, utility room or covered plant area. It is not a rating for standing water or for direct jet washing, so keep the cabinet off a floor that floods.
Is it compatible with my inverter?
It matches most global hybrid and off-grid inverter brands — the 48V LiFePO4 battery sits inside the battery voltage window those inverters expect, with a 58.4V charge voltage and a 43.2V cut-off. Send us the inverter make and model and we will confirm the charge profile and communication settings before you order.
What does the display show, and can I monitor it remotely?
The front panel has a colour touchscreen plus a vertical LED status strip, showing state of charge, voltage and temperature without opening anything. Bluetooth monitoring is an optional function, so the same readings can be checked on a phone, and the RS485 link is the option to specify if the cabinet has to report into a supervisory system.
