The MP 1200-ULTRA Lithium Battery is a high-performance 12.8V, 100Ah (1.28 kWh) energy storage battery available at Maxell Power, engineered to deliver efficient backup power for residential solar house systems, small commercial offices, and UPS applications. Built with safe and stable LiFePO4 (Lithium Iron Phosphate) cell chemistry, it provides a compact, lightweight (10.35 kg), and maintenance-free alternative to traditional lead-acid batteries. Built-in RS485 communication ensures multi-brand inverter compatibility across leading solar manufacturers including Solis, Growatt, Sofar, SAJ, ATESS, MUST, GoodWe, SMA, Deye, Victron Energy, Luxpower, and Voltronic Power.

Featuring an IP21-rated casing and supporting wide operating temperatures (-20°C to 60°C), the MP 1200-ULTRA is designed for flexible installation and versatile system expansion. It supports up to 4 batteries in series and 4 batteries in parallel, enabling seamless scalability from 12.8V up to 51.2V string configurations or higher Ah capacities. For larger energy storage requirements, compare this unit with our high-voltage HP 5000-H Modular Lithium Battery or explore our full range of lithium batteries. For system sizing and technical guidance, contact our technical engineering team.

Frequently Asked Questions

What is the energy capacity and voltage rating of the MP 1200-ULTRA battery?

The MP 1200-ULTRA has a nominal rating of 12.8V DC and 100Ah capacity, providing 1.28 kWh of total usable energy storage.

Can the MP 1200-ULTRA be connected in series or parallel?

Yes, it offers versatile expansion options—supporting up to 4 units connected in series (to build 24V, 36V, or 48V nominal systems) and up to 4 units in parallel for extended capacity.

What charging voltage settings should be configured on the inverter/charger?

For optimal charging, set the Bulk Charge Voltage to 14.0V, Float Charge Voltage to 13.8V, and set the low voltage cutoff at 11.6V.

Which inverter brands are compatible with the MP 1200-ULTRA?

It features an RS485 communication port and is compatible with major hybrid and off-grid inverter brands, including Deye, Solis, Growatt, Sofar, GoodWe, Victron Energy, SMA, Voltronic Power, and Luxpower.

How does this 12.8V module compare to high-voltage lithium battery systems?

While the MP 1200-ULTRA is a 12.8V low-voltage module ideal for small 12V/24V/48V UPS and solar setups, larger residential or commercial installations requiring high-voltage architecture should look at modular systems like the HP 5000-H Lithium Battery.