![]() They are widely used in large portable electrical devices, off-grid power systems and similar roles, where large amounts of storage are needed at a lower cost than other low maintenance technologies like lithium ion. The term "maintenance free" is a misnomer as VRLA batteries still require cleaning and regular functional testing. ![]() ĭue to their construction, the gel cell and AGM types of VRLA can be mounted in any orientation, and do not require constant maintenance. AGM Mobile offers a comprehensive range of waterproof, shock-resistant mobiles and smartphones with long-lasting batteries for people passionate about. Both types of VRLA batteries offer advantages and disadvantages compared to flooded vented lead–acid (VLA) batteries or each other. AGM (absorbent glass mat) batteries feature fiberglass mesh between the battery plates which serves to contain the electrolyte and separate the plates. Gel cells add silica dust to the electrolyte, forming a thick putty like gel. There are two primary types of VRLA batteries, absorbent glass mat ( AGM) and gel cell ( gel battery). The acid density stays at homogenous levels, which enhances charge acceptance and extends the overall battery life.Type of lead–acid battery A 12V VRLA battery, typically used in small uninterruptible power supplies and emergency lamps It’s a construction element that uses the natural movement of the vehicle to keep the acid inside the battery in constant circulation. The acid circulator avoids acid stratification. The glued fleece helps the plates keep their proper position at all times and in every condition. The result: enhanced deep cycle resistance and superior charge acceptance. The scrim holds the active material in place inside the plate and avoids the erosion of mass. Scrim is an additional polyester element between plate and separator. A polyfleece scrim material, added to the positive plate surface, sustainably improves cycle life performance.
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