Husqvarna Blastrac BMG 2200RC Operator's Manual page 49

The temperature of work is important for batteries. Optimum range is from -10⁰C to 45⁰C. Do not keep the
batteries in a minimum temperature for a long period of time. The batteries can freeze in low temperature.
Never charge a frozen battery. More characteristics are shown in the table below.
NONSPILLABLE
Pb
Pb
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