--- title: Maintenance Free Emergency Lighting Batteries? description: Maintenance Free Emergency Lighting batteries aren't 100% maintenance free. image: https://www.lightingservicesinc.net/hs-fs/file-29552838-jpg/images/emergency-lighting-batteries.jpg --- Questions?  Call us now at [(800) 225-0263](tel:1800-225-0263)  |  [(203) 756-8148](tel:203-756-8148) [![Lighting_Services_Logo](https://www.lightingservicesinc.net/hs-fs/file-2244324566-png/images/Logo-2.png?width=200&height=124&name=Logo-2.png "Lighting_Services_Logo")](https://www.lightingservicesinc.net) Search this site on Google Search Google [Lighting Services Blog](https://www.lightingservicesinc.net/life-safety-blog) # [Maintenance Free Emergency Lighting Batteries?](https://www.lightingservicesinc.net/life-safety-blog/bid/262116/Maintenance-Free-Emergency-Lighting-Batteries) ![](https://cdn2.hubspot.net/hub/298916/file-425707331-png/simplex_core_images/profile-default.png) by [Cooper Clark](https://www.lightingservicesinc.net/life-safety-blog/author/cooper-clark) on Apr 23, 2013 - [Tweet](https://twitter.com/share) [![](http://www.market8.co/email-sharing/email-icon-2.png) ](http://www.market8.co/email-sharing/email-sharing-form.php?blogname=Lighting%20Services%20Blog&blogurl=https://www.lightingservicesinc.net/life-safety-blog/bid/262116/Maintenance-Free-Emergency-Lighting-Batteries) ![Emergency Lighting Batteries](https://www.lightingservicesinc.net/hs-fs/file-29552838-jpg/images/emergency-lighting-batteries.jpg?width=245&height=167&name=emergency-lighting-batteries.jpg) Not totally true… Wet type emergency lighting batteries always consume some of the electrolyte (sulfuric acid for lead and potassium hydroxide for nickel cadmium) when they are being charged. The need to refill is based on age, ambient temperature, charge rate, etc. and the established monitoring of properly maintained levels of liquid. The charging process normally produces a flammable gas mixture of hydrogen and oxygen. A short circuit, open flame or smoking during must be avoided when adding water to keep the fluid above the plates or the battery manufacturer’s indicated max fill level. Some maintenance free batteries that use calcium instead of lead require less maintenance because of the greater reservoir capacity. Adding distilled water where and when possible will greatly increase the life of these “so called” maintenance free batteries. Topics: [Emergency Lighting Systems](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-systems), [Emergency Lighting CT](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-ct) About The Author ![](https://cdn2.hubspot.net/hub/298916/file-425707331-png/simplex_core_images/profile-default.png) [ Cooper Clark ](https://www.lightingservicesinc.net/life-safety-blog/author/cooper-clark) ## About this blog Blog about facilities' life safety and lighting concerns including emergency lighting, exit signs, interior and exterior lighting. ### Subscribe to Email Updates [Subscribe to RSS feeds](https://www.lightingservicesinc.net/life-safety-blog/rss.xml) [![Click to Request My 100% FreeLife-Safety Inspection AED - Emergency Lighting - Fire](https://no-cache.hubspot.com/cta/default/235721/cebe47bd-ead7-40ad-9449-b3eab0ac17e0.png)](https://cta-redirect.hubspot.com/cta/redirect/235721/cebe47bd-ead7-40ad-9449-b3eab0ac17e0) ### Recent Posts ### Posts by Topic - [Commercial Lighting (32)](https://www.lightingservicesinc.net/life-safety-blog/topic/commercial-lighting) - [Emergency Lighting (32)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting) - [LED Lighting (29)](https://www.lightingservicesinc.net/life-safety-blog/topic/led-lighting) - [Emergency Lighting Systems (27)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-systems) - [Energy Savings (23)](https://www.lightingservicesinc.net/life-safety-blog/topic/energy-savings) - [Lighting Maintenance (17)](https://www.lightingservicesinc.net/life-safety-blog/topic/lighting-maintenance) - [Emergency Lighting CT (16)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-ct) - [Understanding Emergency Lighting Fire Code (13)](https://www.lightingservicesinc.net/life-safety-blog/topic/understanding-emergency-lighting-fire-code) - [Emergency Lighting Made Simple (11)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-made-simple) - [Electrical repairs (2)](https://www.lightingservicesinc.net/life-safety-blog/topic/electrical-repairs) - [Electric Vehicles (1)](https://www.lightingservicesinc.net/life-safety-blog/topic/electric-vehicles) [Expand all](https://www.lightingservicesinc.net/life-safety-blog/bid/262116/Maintenance-Free-Emergency-Lighting-Batteries#) ### Authors List - [Cooper Clark (135)](https://www.lightingservicesinc.net/life-safety-blog/author/cooper-clark) - [Guest Author (1)](https://www.lightingservicesinc.net/life-safety-blog/author/guest-author) ### Contact Details Phone: (800) 225-0263 Fax:      (203) 596-8991 eMail:  [sales@lightingservicesinc.net](mailto:sales@lightingservicesinc.net) ### lightingservicesinc.net ### Blog Categories - [Commercial Lighting (32)](https://www.lightingservicesinc.net/life-safety-blog/topic/commercial-lighting) - [Emergency Lighting (32)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting) - [LED Lighting (29)](https://www.lightingservicesinc.net/life-safety-blog/topic/led-lighting) - [Emergency Lighting Systems (27)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-systems) - [Energy Savings (23)](https://www.lightingservicesinc.net/life-safety-blog/topic/energy-savings) - [Lighting Maintenance (17)](https://www.lightingservicesinc.net/life-safety-blog/topic/lighting-maintenance) - [Emergency Lighting CT (16)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-ct) - [Understanding Emergency Lighting Fire Code (13)](https://www.lightingservicesinc.net/life-safety-blog/topic/understanding-emergency-lighting-fire-code) - [Emergency Lighting Made Simple (11)](https://www.lightingservicesinc.net/life-safety-blog/topic/emergency-lighting-made-simple) - [Electrical repairs (2)](https://www.lightingservicesinc.net/life-safety-blog/topic/electrical-repairs) - [Electric Vehicles (1)](https://www.lightingservicesinc.net/life-safety-blog/topic/electric-vehicles) ### Follow Lighting Services Inc: