Topcon RL-100 2S - Page 38

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1) For longer battery life, conform to the suggested charging time to the extent possible.
2) The battery source will discharge when stored and should be checked before using
with instrument.
3) Be sure to charge stored battery source every 3 or 6 months and store in a place at
30 °C or below.
If you allow the battery to become completely discharged, it will have an effect on
future charging.