An MPPT controller is what turns panels into a properly charged LiFePO4 bank — EGbatt supplies them tuned to the LFP voltage window so you harvest more and damage nothing.

Overview

An MPPT (maximum power point tracking) charge controller converts the panel string’s higher voltage to the battery’s lower voltage at the maximum power point, recovering energy a basic PWM controller wastes. EGbatt builds MPPT controllers for 12V/24V/48V LiFePO4 banks with a lithium charge profile (absorb/float set to LFP, not lead-acid), temperature-compensated limits and the monitoring your system expects. They are the right device for off-grid and hybrid banks where the PV charges the battery directly rather than through a grid-tie inverter.

Key specifications

SpecificationValueWhy it matters TopologyMPPT (vs PWM)More harvest from the array. Voltage12 / 24 / 48V LFPLithium profile. FeatureTemp-compensated limitsProtects in heat/cold. MonitoringDisplay / commsState of charge visibility. RolePV → battery directlyOff-grid and hybrid.

Typical applications

  • Off-grid solar: Direct battery charging.
  • RV and marine PV: Array to bank.
  • Hybrid banks: PV input side.
  • Remote telecom: Standalone array.

How to specify & buying guide

  • Size the controller's PV input (Voc, Isc) to the panel string, with headroom for cold-weather Voc rise.
  • Set the charge profile to LiFePO4 — never lead-acid — or you will over/under-charge.
  • Match output current to the bank's acceptable charge rate.
  • Use temperature sensing if the bank sees real temperature swing.

Engineering & manufacturing at EGbatt

Inverters and charge controllers are matched to the LiFePO4 voltage window and the BMS communication protocol. We validate MPPT tracking, THD, surge handling and the seamless grid/island transition your system design depends on.

Certifications & compliance

  • UN38.3 — Mandatory lithium battery transport test (altitude, thermal, vibration, shock, external short). Required for any cross-border shipment.
  • IEC62109
  • CE — EU declaration of conformity for the applicable directives.
  • RoHS — Restriction of hazardous substances in the battery and BMS.

Frequently asked questions

MPPT or PWM?

MPPT harvests more from the array, especially with a higher-voltage string; worth it for most LFP banks.

Will it charge LiFePO4 correctly?

With the LFP profile set; confirm before commissioning.

How do I size it?

From panel string Voc/Isc with cold-weather headroom and the bank's charge-current limit.

Does it talk to the BMS?

Higher-end units do via CAN/RS485; basic units just charge to the set points.

Related products & resources

  • Hybrid Inverters
  • 48V LiFePO4
  • Off-Grid Systems

More in this series

  • Lithium Battery Products
  • LiFePO4 Cells
  • Cylindrical Lithium Cells
  • LiFePO4 Battery Modules
  • LiFePO4 Battery Management Systems (BMS)
  • Sodium-Ion Batteries
  • 12V LiFePO4 Batteries
  • 24V LiFePO4 Batteries
  • 48V LiFePO4 Batteries
  • Residential Energy Storage Systems
  • Commercial & Industrial Energy Storage
  • Containerised BESS
  • Portable Power Stations
  • RV Lithium Batteries
  • Marine LiFePO4 Batteries
  • Golf Cart Lithium Batteries
  • Deep Cycle LiFePO4 Batteries
  • Trolling Motor Lithium Batteries
  • Forklift Lithium Batteries
  • Self-Heating LiFePO4 Batteries
  • Low Temperature Lithium Batteries
  • Hybrid Inverters
  • Inverter Chargers

Request a quote

Send us your voltage, capacity, dimensions, certification target and annual volume. Our engineering team returns a proposal within three working days. Start your RFQ or review our custom pack capabilities.

Request a LiFePO4 quote

Tell us your product, volume and specs — our engineering team returns a proposal within three working days.

Error: Contact form not found.