Sunnytech Solar LiFePO4 Lithium Battery

This 48V 51.2V 100Ah LiFePO4 lithium battery is designed for reliable performance in RV, marine, solar storage, and backup power applications. Built with a robust smart Bluetooth BMS, active balancing, and Bluetooth monitoring, it delivers intelligent battery protection, real-time monitoring, and long-term reliability.

After many years in the lithium battery industry, we recognised the challenges of maintaining consistent quality with imported batteries, often resulting in failures and costly repairs. To address this, we developed Sunnytech Solar Lithium Batteries. Our locally made LiFePO4 batteries are built with top-tier, premium-grade cells and a robust BMS to deliver superior performance and dependable long-term use. Backed by responsive after-sales support, we are committed to providing reliable, high-quality battery solutions you can trust.

Custom battery orders are available (12V to 48V, 50Ah to 600Ah). For details, contact sales@sunnytech.co.nz.

This LiFePO4 battery model cannot be wired in series, with a maximum of 10 in parallel.

Included 2.5-inch LCD Display

This version includes the 48V 51.2V 100Ah LiFePO4 lithium battery and a 2.5-inch LCD display. The display is bracket mounted and provides a simple way to view battery capacity and current. A charger is not included in this version.

  • Included display: 2.5-inch LCD display, bracket type.
  • Display information: battery capacity and current.
  • Display cable length: 3 metres.
  • Charger: not included.

Other available versions:

Note: This version includes the 2.5-inch LCD display but does not include a charger. Please allow an additional 1–2 working days for dispatch when a screen is included.

Electrical Specification

Nominal Voltage: 48V (51.2V)

Nominal Capacity: 100Ah

Energy: 5120Wh

Self Discharge: <3% per month

Charge Specification

Max. Charge Current: 100A

BMS Charge Voltage Cut-off: 58.4V (1±0.2S)

Discharge Specifications

Max. Continuous Discharge: 100A

Peak Discharge Current: 200A

BMS Discharge Cut-off: 46.4V

Mechanical Specifications

Dimensions (L × W × H): 542 x 380 x 215mm

Weight: 42kg

Terminal Type: M8 Screw

Cycle Life: 8000+ cycles at 80% DOD

Built-in BMS Protection: Cell balancing, overcharge protection, over-discharge protection, and short circuit protection

BMS Balancing: Active Balancing

Learn More: Passive vs. Active Balancing

Bluetooth Monitoring: Yes

See Battery Manual 

Battery Cells 15-Year Warranty / BMS 5-Year Warranty — See Warranty Details →
Local support, no overseas warranty headaches

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SHIPPING NOTICE

PLEASE DO NOT SIGN for the goods if the items appear damaged, as the courier or transport company may decline a claim after delivery has been accepted.

  • Do not sign the receipt before checking for visible damage. Remove the packaging if you have any concerns.
  • Be specific in your notation: crushed corners, broken parts, forklift damage, wet stains, leaking, or other visible issues.
  • If any visible damage is found, or if you are unsure, refuse delivery or clearly note it on the delivery receipt, for example: “BOX CRUSHED – POSSIBLE DAMAGE”. Please also report the damage to us as soon as possible.
Please note: Please inspect the goods carefully before signing. Once the delivery is accepted without noting visible damage, it may be difficult to lodge a damage claim with the courier or transport company.