The performance of the UPS gel battery is better than that of the VRLA battery. UPS gel battery has many advantages such as stable performance, high reliability, long service life, strong adaptability to ambient temperature (high and low temperature), ability to withstand long discharge, cyclic discharge, deep discharge, and high current discharge, and overcharge and over-discharge self-protection.
The UPS gel battery for e-bikes is vacuum-filled in an AGM spacer, where a solution of silica gel and sulfuric acid is injected between the positive and negative plates of the battery. The UPS gel battery is unable to perform oxygen cycling at the initial stages of use because the gel encloses both the positive and negative plates. The oxygen produced above the positive plate cannot diffuse to the negative plate. As a result, lead reduction with the active substance on the negative plate cannot be achieved. It can only be discharged by the exhaust valve, which is the same as a liquid-rich battery.
After using the UPS gel battery for a while, the gel begins to dry out and shrink, creating cracks through which oxygen passes directly to the negative plate for the oxygen cycle. The exhaust valve then doesn't open as often. The UPS gel battery works close to a seal with very little water loss. Therefore, the main failure mechanism of an electric bicycle battery is the water loss mechanism. Using a UPS gel battery can get very good results.
The colloidal electrolyte is a colloidal substance formed by adding gel into the electrolyte and coagulating sulfuric acid electrolyte. Generally, colloidal stabilizers and compatibilizers are added to the colloidal electrolyte. Some colloidal formulations also have retarders that retard colloidal solidification to facilitate colloidal refilling.