Not NiMh but one regular 18650 Lion ! How will it behave in sub zero T° is a mystery ! Lion are tricky to charge and fail if not done properly (low T°, Voltage ... solar panel direct to the battery !). Apart from that works OK. How long ? Time will tell. As usual "instructions " are given in a language that seems to be english, the words are, yet are hard to make any sense of.

Not NiMh but one regular 18650 Lion ! How will it behave in sub zero T° is a mystery ! Lion are tricky to charge and fail if not done properly (low T°, Voltage ... solar panel direct to the battery !). Apart from that works OK. How long ? Time will tell. As usual "instructions " are given in a language that seems to be english, the words are, yet are hard to make any sense of.

Not NiMh but one regular 18650 Lion ! How will it behave in sub zero T° is a mystery ! Lion are tricky to charge and fail if not done properly (low T°, Voltage ... solar panel direct to the battery !). Apart from that works OK. How long ? Time will tell. As usual "instructions " are given in a language that seems to be english, the words are, yet are hard to make any sense of.