These lithium (LiFePO4) batteries are waterproof according to IP67, deliver particularly strong performance, are easy to install and can be checked by the user via app. These batteries offer high thermal and chemical stability, are also highly resistant to extreme conditions, and have built-in protection features including overcharge, discharge, overheating, and short-circuit protection, as well as a pressure relief valve. They work in both high and low temperatures, can be used in salt and fresh water and are perfectly compatible with Minn Kota motors, among others. All models have an integrated automatic heating function, which makes the battery more tolerant when charging in cold temperatures. All batteries include a wired external battery charge level indicator. Lifespan: >3,500 cycles. Screw poles must be ordered separately.