Unik Techno • September 8, 2020

What is the industrial installation procedure, maintenance, and calibration for a float-type level sensor?

In a lead acid battery the float sensors are generally used only for flooded type industrial batteries. These type of sensors are used in stationary batteries having opaque or translucent containers & for motive power traction batteries.


As regards installation the following points are usually considered:

The manufacturer of sensor usually needs to know whether the vent hole has a threaded type vent plug or bayonet type plug or Push Fit type vent plug.

The manufacturer of sensor needs the diameter of the vent hole which is usually 25 mm or 27 mm or 35 mm.


To provide a float which determines the minimum level of electrolyte and maximum allowable level of electrolyte the manufacturer needs to know the space available between the bottom of vent hole and top of separator or separator guard. This detail also needs to be given to the sensor manufacturer by the battery manufacturer.


The battery manufacturer also has to provide the sensor manufacturer the difference in min and max level which is the range in which the sensor shall function.

As regards maintenance of this sensor system it shall need to be done at the battery user end and the only maintenance such float level sensors need is a periodic cleaning of float plugs to prevent clogging with consequent malfunctioning. This cleaning is a physical activity involving washing with water.



There is no calibration to be done for float plug sensors since the level of minimum and maximum has been determined and set by the manufacturer at the design stage with no need of a periodic calibration. This level does not change throughout the life of that particular battery. However please note that such sensor float plugs tailored for one battery are not necessarily interchangeable unless the design of the new battery is matching to the original battery.


Build a safe, efficient battery room for lead-acid, lithium-ion & EV batteries. Learn layout, ventil
By Unik Techno June 24, 2025
Build a safe, efficient battery room for lead-acid, lithium-ion & EV batteries. Learn layout, ventilation & charging tips to maximise safety & performance.
Explore the impact of Depth of Discharge (DoD) on industrial battery life.
By Unik Techno May 8, 2025
Explore the impact of Depth of Discharge (DoD) on industrial battery life. Learn best practices to extend battery lifespan and lower operational costs.
By Unik Techno March 28, 2025
Battery safety is critical in industries relying heavily on robust, dependable power sources such as electric forklifts, golf carts, and industrial machinery. One technology significantly advancing battery safety is heat-sealed battery construction . At UNIK Batteries, we utilise advanced heat-sealing techniques to provide superior safety, reliability, and longer battery life for demanding industrial applications. What Are Heat-Sealed Lead-Acid Batteries? Heat-sealed lead-acid batteries are constructed using a specialised sealing process where battery casings are permanently bonded through heat application. Unlike traditional battery sealing methods using adhesives or mechanical seals, heat sealing creates a highly durable, airtight enclosure, ideal for demanding industrial environments. Key Benefits of UNIK's Heat-Sealed Battery Technology Electrolyte Leakage Prevention Higher resistance levels, which may impact power output. Reduced charging efficiency, resulting in longer charge times. Increased operational strain, potentially leading to faster wear and tear. Here is why winter battery maintenance is essential: Proper care reduces the risk of cell damage due to freezing temperatures. Batteries that are well-maintained offer operational efficiency. Regular maintenance extends the life of your batteries, saving on replacement costs. Taking these steps will keep your i ndustrial forklift battery in peak condition, even when temperatures plummet. Lead Acid & Lithium-ion Battery Care in Cold Weather Maintenance of Lead Acid Batteries Lead acid batteries are more sensitive to cold temperatures because their electrolyte solution can freeze, particularly when the battery is in a low-charge state. For efficient battery care in cold weather, follow these tips: Charge fully after each use as a fully charged lead-acid battery is less likely to freeze. Store batteries in a temperature-controlled environment indoors or in a heated area to protect them from the elements. Inspect the battery for cracks or leaks, as these can worsen in the cold. Lead-acid batteries need adequate water to function correctly, so check and refill water levels routinely. Clean terminals regularly to prevent corrosion and improve conductivity. Lithium-ion Battery Maintenance While lithium-ion batteries fare better than lead acid batteries in colder weather, they still require care to avoid performance drops. Follow these tips for top-notch lithium-ion battery maintenance: When starting your material handling equipment, give your battery some time to warm up just as you would allow your car battery to reach an optimum temperature before driving. Lithium-ion batteries should not be charged at sub-zero temperatures, as this can lead to permanent damage. Lithium-ion batteries are more efficient when they maintain a moderate charge level in winter between 30-80%, to reduce strain on the cells. Following these steps can help ensure that both l ead acid and lithium-ion battery maintenance routines are winter-ready. Winter can be challenging for industrial forklift batteries , but with consistent battery care in cold weather , you can protect your investment and keep your operations running smoothly. By paying attention to winter battery maintenance and adjusting your care strategies for different battery types, you can enhance battery performance and extend its life, no matter how cold it gets. Protect your operations all season long! For more tailored solutions, explore our lithium-ion battery and lead acid battery sections to find the best fit for your material handling operations. Contact us today to learn how our battery solutions can power your success.
More Posts