The TROLL Replaceable Battery Pack provides extended battery life for the Aqua TROLL 100/200, BaroTROLL, or Level TROLL 300/400/500/700, ideal for long-term or limited-access deployments and applications that require fast, frequent sampling. The battery pack holds 8 field-replaceable 1.5V (AA size) batteries and can be used with vented or non-vented instruments (both require desiccant). Benefits:

• Adds an estimated 1.6 years extra life to Level TROLL Data Loggers*
• Adds an estimated 5.75 years extra life to Aqua TROLL Data Loggers*

*Logging all available parameters at 15-minute intervalsIncludes:

• Replaceable battery pack
• 8 lithium 1.5 V batteries
• Storage desiccant
• Instruction sheet