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  • The rechargeable lithium battery for TN500 and TN420 turbidity meters. Easy to install.

            T500-4 Rechargeable Lithium Battery

            • We warrant this instrument to be free from defects in material and workmanship and agree to repair or replace free of charge, at the option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged product attributable to the responsibility of APERA INSTRUMENTS, LLC for a period of TWO YEARS for the stirrer from delivery.

              This limited warranty does NOT cover any issues due to:

              • Accidental damage
              • Improper use
              • Normal wear and tear
              • Transportation
              • Storage
              • Failure to follow the product instructions
              • Unauthorized maintenance, modifications, combination or use with any products, materials, processes, systems or other matter
              • Unauthorized repair
              • External causes such as accidents, abuse, or other actions or events beyond our reasonable control.
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