RS-COVER-LFP

Home » RS-COVER-LFP

LiFePO4 charger for solar powered data loggers

The ML-COVER-LFP is a power provision cover fitting our RS-525SE/PE off-grid LTE-m & NB-IoT data logger. An ML-417 can be powered from 1 to 4 LiFePO4 18650 3.2V cells, which can be charged by connecting an external solar panel or (non-continuous/unstable) DC source.

To optimize charging, the charger includes a jumper for selecting between two distinct MPP voltage ranges.

This power provision might be a convenient alternative, if your application needs a bit more energy than an RS-COVER-PV with integrated 1Wp solar panel can yield and store, but you want to avoid using an external 12V battery.

About the battery chemistry

Advanced cycle life

LiFePO4 is a stable and safe battery chemistry with an excellent cycle life (over 1000 cycles at 100% DOD and thousands at 80% DOD). The energy round trip efficiency is much better than that of NiMH or Lead Acid batteries, so you can yield more energy from a same sized solar panel.

Please use our online Data logger power consumption calculator to estimate the battery life of your application.

Specifications

  • Batteries (not included)
    • Chemistry: LiFePO4 (LFP)
    • Cell voltage: 3.2V Nominal
    • State of Charge (3.1V<5%, 3.2V<20%, 3.25V<50%, 3.3V<90%, 3.4V<100%)
    • Cell type: 18650
    • Holders: 4, up to 7200mAh (23Wh)
  • Charge controller
    • 1600mA max charge current
    • Cell over charge protection
    • Cell charge temperature protection
    • Cell low voltage protection (auto output switch-off at 2.5V)
    • MPP voltage range selection jumper
  • Solar/DC input (X1)
    • Optimized for 12 or 36 cells
    • Optimized for 7.2 or 21Voc (Open circuit voltage)
    • Input voltage ranges: 6 .. 18V or 18 .. 28V
  • Range/MPP selector (JP1)
    • Jumper at pin 1 & 2 to select 6..18V (12 cells MPP)
    • Jumper at pin 2 & 3 to select 18..28V (36 cells MPP)
  • Outputs (X2):
    • 3.2V to power the data logger.1)
  • Enclosure part
    •  IP68/69 (24h@3m) weatherproof enclosure.
    • UV stabilized polycarbonate.
    • 140x120x40mm, 205g.
    • 4x stainless steel (A2/W4/304) M4 bolt (25mm)

1) Don’t forget to set the “Battery (protection & lifespan)” property in the RS-525SE/PE to LFP.

Discover the possibilities

Want to know more about what YDOC can do to help you with your quest for the right data logger? Do not hesitate to get in contact.

Contact us