HOW DO EXTREME HIGH AND LOW TEMPERATURES AFFECT THE OPERATION?

Lithium iron phosphate batteries are able to operate in a wide temperature range. The recommended range to charge the PLB40 is from 0C to +45C (32F to 113F) and to discharge is from  -10C to +55C (14F to 131F).  You may use the product outside of these ranges but could experience loss of performance.