51.2V Lithium Solar Batteries – 100Ah, 200Ah and 300Ah LiFePO4 (A‑Grade)
TheSunPays 51.2V 100Ah 5.12kWh Lithium battery with 16 x cells & colour touch-screen.
TheSunPays 51.2V 300Ah 16kWh and 100Ah 5.12kWh batteries: stock expected early November 2026
51.2V Lithium Solar Batteries – 100Ah, 200Ah and 300Ah LiFePO4 (A‑Grade)
Explore our premium range of Lithium Solar Batteries featuring 51.2V LiFePO4 battery packs built with A‑Grade, First Life Cells. These batteries are ideal for solar energy storage, off-grid power systems, and inverter backup setups.
Designed for performance, durability, and safety, our batteries are perfect for homes, farms, and businesses across South Africa. Whether you need compact 5.12kWh storage or high-capacity 16kWh units, The Sun Pays offers reliable energy solutions at unbeatable prices.
- ✔ A‑Grade LiFePO4 Cells – Long-lasting & Safe
- ✔ 51.2V
- ✔ Deep-cycle performance with >4000 cycles
- ✔ Compatible with most 48V inverters (Victron, Growatt, Sunsynk, etc.)
- ✔ Fast delivery in Gauteng and across South Africa
Since 2007, TheSunPays has been a trusted supplier of solar energy products — delivering value, support, and peace of mind to customers nationwide.
Before you buy
- Battery buying guide – capacity, depth of discharge and inverter compatibility explained.
- Solar system sizing calculator – work out how much storage you need.
- Technical support & manuals – user manuals, inverter settings and battery paralleling guide.
- How long will a 5kWh lithium battery last? – what a battery can run and for how long.
- Lithium vs lead-acid batteries – cost and lifespan compared.
Frequently asked questions
What does 51.2V LiFePO4 mean?
LiFePO4 is lithium iron phosphate, a safe, long-life lithium battery chemistry. A 16-cell pack of these cells has a nominal voltage of 51.2V, which is why these batteries are used with 48V inverters.
Will these batteries work with my inverter?
They work with most 48V inverters, including Victron, Growatt and Sunsynk. Check your inverter's battery settings against our inverter settings guide for lithium batteries, or contact us and we will confirm it for you.
How much battery storage do I need?
Start with the power you use at night, because that is what the battery has to supply. Use our solar system sizing calculator to work it out from your appliances or your monthly bill.
Lithium or lead-acid batteries?
Lithium batteries cost more up front but last for thousands of cycles. Read our lithium vs lead-acid comparison for the full cost picture.
