Hello boo70.

Thank you for your review. We are sorry to hear about the experience you have encountered with your batteries. The overall battery life is dependent on many factors such as where they have been stored, charged, and handled. When the battery will not be in use, we suggest storing it indoors, in a cool dry area - away from direct sunlight. Leave the charger unplugged and the battery disconnected from the charger unless it needs charging. It is recommended to store the battery with a full charge, and if it is being stored for a period where no use is expected, to check on the charge every couple of months. If you notice the charge has dropped, we advise charging the battery back up to full before returning it to its safe storage place. Following these steps will ensure you receive the most of the battery life. Greenworks manufactures a range of voltage platforms from 24V - 80V, each voltage platform has its own set of interchangeable tools and battery but are not interchangeable across different voltage platforms. Only Greenworks batteries, chargers and machines of the same voltage are compatible and interchangeable with one another.
We would like to get in touch to ensure that your tool is operating up to our performance standards. Please reach out to our Customer Support Live Chat on www.greenworkstools.com or call 1-888-909-6757. We would like the opportunity to speak with you to see if we can find a solution.