Green Bank GB48300 15.36kWh LiFePO4 Battery 48V 300Ah — 10 Year Warranty, 8000 Cycles

Under $390 per kWh — our best-value 48V battery, backed by our longest warranty.

Why the GB48300

The GB48300 is a 48V, 300Ah lithium iron phosphate (LiFePO4) battery delivering 15.36kWh of usable storage in a single floor-standing cabinet on lockable casters — wheel it into place, lock the wheels, connect. It's built on CATL cells — the same manufacturer supplying the world's largest EV brands — and rated for 8,000 cycles at 80% depth of discharge, which works out to more than 20 years at a full cycle every day. Most of our customers cycle every 1.5–2 days, which takes it past 25 years.

It's the battery we recommend most often for off-grid homes, sheds and small commercial sites: enough capacity to run a typical household overnight, a 7kW continuous output that suits 5–8kW inverters, and the ability to add up to 15 more units in parallel as your needs grow — a maximum bank of 16 units, 245kWh.

• 10-year warranty — handled by our Melbourne team, not an overseas supplier.
• Built-in BMS — protects against over-charge, over-discharge, over-current, short circuit, reverse polarity and temperature, and communicates with your inverter over CAN (500k) or RS485.
• LCD and app monitoring — the front LCD shows state of charge, current, cell voltages, temperatures and cycle count; the BAT Monitoring app (iOS and Android) shows the same over Bluetooth and lets you select the inverter protocol.
• Plug-and-play with Deye and Green Bank inverters — see the compatibility list below.
• Safe chemistry, certified — LiFePO4 is the most thermally stable lithium chemistry available, with no cobalt. The GB48300 carries IEC 62619 and CE safety certification.

What will it run?

15.36kWh is roughly a day's use for a 2–3 bedroom home running fridge, lights, washing machine, TV, computers and a small air conditioner. Add a second unit if you run electric hot water or heavy heating, or want two days of autonomy through cloudy weather. Call us with your appliance list and we'll size it properly.

Compatible inverters

The GB48300 talks directly to these inverters over CAN bus — no manual voltage settings needed:

• Green Bank MITS6KWLP1 6kW 48V off-grid inverter
• Green Bank MITS12KWP1 12kW and MITS16KWLP1 16kW off-grid inverters
• Deye SUN-5K-SG04 5kW hybrid, Deye SUN-8K-SG05LP1 8kW hybrid
• Deye SUN-12K and SUN-16K single-phase hybrids, SUN-8K and SUN-12K three-phase hybrids — see the full inverter range

Compatible with 16+ inverter brands

The GB48300 — and every Green Bank battery — is compatible with all major 48V inverter brands, including SMA, Solis, GoodWe, Sofar, Luxpower, Voltronic Power, Growatt, Megarevo, Deye and Victron Energy, plus a further six brands. If your inverter isn't listed, call us and we'll confirm. For inverters without CAN communication, use the recommended settings below.

Specifications

Recommended inverter settings (inverters without CAN communication)

Warranty and support

Every GB48300 carries a 10-year warranty backed by Green Bank Solar in Melbourne. Warranty claims and technical support are handled by our own Australian staff — call or email and you'll get an answer from someone who knows the product, usually the same day.

Delivery

Stock is held in our Truganina, Victoria warehouse and ships Australia wide on a pallet. Because of the weight, freight is quoted per order — call 0447 447 554 or use the quote form and we'll confirm delivery cost and timing for your address. Pick-up from the warehouse is welcome.

Frequently asked questions

Can I add more batteries later?

Yes. Up to 16 GB48300 units can be connected in parallel, so you can start with one and expand as your usage grows — same model only, so the battery management systems can share the load.

Does it need to be installed indoors?

It's rated IP21, so it should be installed in a shed, garage or enclosure out of rain and direct sun, on a solid floor, with the casters locked. For outdoor mounting we supply an IP65 cabinet sized for one battery or several in parallel.

Is it CEC approved?

The GB48300 is designed for off-grid and hybrid installations and holds IEC 62619 and CE safety certification. If you need a CEC-listed battery for a grid-connected rebate, ask us about the GB48200.

How long will it last?

Rated for 8,000 cycles at 80% depth of discharge — over 20 years at one full cycle per day, and 25+ years at the every-1.5-to-2-days pattern most households actually run. Covered by a 10-year warranty.

Detailed specifications — from the GB48300 user manual

Everything below is taken from the Green Bank GB48300 user manual (document 65801-0022-00). For the full manual, installation drawings and DIP-switch tables, download it from our downloads page.

Electrical

Recommended inverter / charger settings

Set these on any inverter, MPPT charge controller or UPS that doesn't communicate with the battery over CAN before you switch it on. Lithium behaves differently from lead-acid, so the lead-acid defaults are not correct.

Protection and battery management

Interfaces and communication

Parallel operation

Display and indicators

Physical

Installation requirements

• Indoors, on a solid level surface (concrete or masonry) able to carry the weight; lock the casters once positioned against the wall.
• Out of direct sunlight, away from open flame and flammable materials, inaccessible to children and animals.
• Ambient −10°C to +55°C, 5–95% relative humidity, altitude below 3,000m, well ventilated.
• Inverter and battery both switched off before connecting; check polarity; earth every battery; never connect different battery types together.
• Install and service by an authorised technician only — the warranty depends on it.
• Fire: dry powder extinguisher only, never liquid.

Storage

Store in 5–70% humidity, and recharge periodically; after long storage bring the battery back to around 30% SOC before first use.

What the warranty doesn't cover

Normal wear and tear; damage in transport or storage; unauthorised installation, maintenance or modification; use outside the specified environment; incorrect charge or discharge settings; insufficient ventilation; ignoring the safety instructions; and force majeure such as lightning, storm, flood, fire or earthquake.