MECER M3000 3.55kWh 48V LiFePO4 LITHIUM BATTERY MODULE

Description

Build your backup power system on storage that will outlast the inverter in front of it. The Mecer M3000 Lithium Battery Module delivers 3.55kWh of LiFePO4 storage in a rack-mountable 48V module rated for 6000 charge cycles — that is roughly sixteen years at one cycle per day, backed by a 5 year manufacturer warranty.

Where lead-acid batteries lose capacity fast under the deep, repeated cycling that load shedding demands, LiFePO4 is built for exactly that duty. The M3000 handles daily discharge without the capacity collapse that leaves lead-acid owners replacing batteries every two to three years.

Start small, scale later

The M3000 is modular by design. Begin with a single 3.55kWh module and add more as your budget or consumption grows — up to 40 modules can run in parallel, giving a theoretical ceiling of over 140kWh. Each module stacks into a standard rack, so expansion is a matter of mounting the next unit and connecting it, not redesigning the system. For most South African households, two to four modules cover a full day of essential loads.

Why LiFePO4 matters

• Safety — lithium iron phosphate is the most thermally stable lithium chemistry, far less prone to thermal runaway than the NMC cells used in many consumer products
• Depth of discharge — use the capacity you paid for, rather than the 50% a lead-acid bank realistically allows
• No maintenance — no topping up, no equalisation charging, no ventilation requirements
• Natural cooling — no fan, no noise, with optional heat/fan configuration available for demanding installations

Full specifications

• Nominal energy: 3.55kWh
• Nominal capacity: 74Ah
• Nominal voltage: 48V
• Chemistry: LiFePO4 (lithium iron phosphate)
• Continuous discharge current: 37.5A
• Continuous charge current: 37.5A
• Charging cut-off voltage: 54V
• Discharging end-off voltage: 40.5V
• Cycle life: 6000 cycles (0.2C charge/discharge, 25°C, 80% DoD)
• Communication: CAN / RS485
• Maximum configuration: 40 modules in parallel
• Protection level: IP20
• Charging temperature range: 0°C to 50°C
• Discharging temperature range: -20°C to 50°C
• Dimensions (W x D x H): 400 x 360 x 133.5 mm
• Net weight: 30 kg
• Certification: TÜV Rheinland, CE
• Warranty: 5 years

Compatibility

The M3000 is designed for 48V systems and communicates over CAN or RS485 with compatible hybrid inverters. Pairs naturally with the Mecer Axpert 5.6kVA Hybrid Solar Inverter. If you are unsure whether your existing inverter will talk to this battery, contact Synergy Suppliers before ordering and we will confirm compatibility for you.

Planning a full system? Get in touch and we will size the inverter, battery bank and panel array around your actual consumption rather than guesswork. Bulk and trade pricing available on request.