Gel batteries are a type of lead-acid batteries with a gel-like electrolyte. They are often used in applications where a deep discharge is required, such as in solar energy systems, electric vehicles, and emergency power supplies.

The maximum discharge depth of a gel battery varies depending on the specific brand and model, as well as the design specifications of the battery. In general, gel batteries can be discharged up to about 80% of their total capacity. However, it is recommended not to discharge the battery completely on a regular basis, as this can reduce the battery's lifespan.

Deep discharges can damage the battery and affect its long-term performance. Regularly discharging a gel battery to the maximum level can lead to a shortened lifespan and reduced capacity.

It is important to follow the manufacturer's recommendations regarding the maximum discharge depth and use of the gel battery. If you need specific information about the discharge capacity of a particular gel battery, consult the technical specifications or contact the battery manufacturer.