Thank you for sharing your feedback with us!
We want to help clarify what might be happening with your backpack sprayer's battery. When a lithium-ion battery is stored for a prolonged period of time, such as two years without use, it naturally experiences a process called self-discharge. Over an extended timeframe, this can lead to a significant drop in voltage and a permanent loss of overall battery capacity, causing it to lose its charge much quicker than expected when finally put to work.
For the best performance, we always recommend charging the battery periodically during long periods of storage to keep the cells healthy. ️ If you have any questions or need further assistance with your FlowZone Typhoon, please feel free to reach out to us directly!
The Rocky Mountain BioAg® Team