May 8, 2025: The Dutch firm established to market a lead-gel residential BESS has unveiled a new charging process claimed to ensure batteries last twice as long as comparable products on the market.

Qurmit confirmed last August it had launched the BESS, based on “tried and trusted lead acid technology”, developed by ESS4U and parent firm TSS4U with support from Exide Technologies and the VDL Groep.

Now the developer told Batteries International on April 29 the new ‘Qurmit Booster’ significantly extends the lifespan of the lead-gel batteries.

Under normal conditions the home BESS can handle up to 9,000 charge cycles (depending on daily usage), effectively doubling the standard charge cycle range specified by Exide Technologies, Qurmit claimed.

This means that the batteries are not only safe and easy to recycle, but also technically on par with lithium ion battery tech.

Qurmit said this performance is the result of over 25 years of battery development experience and extensive testing, even under extreme conditions.

Founder Jan-Willem Linsen said: “Our technology ensures that the batteries not only last longer, but are also more cost-effective for our customers.”

In addition to regular home batteries, Qurmit is expanding its offering with larger three-phase battery systems, specially designed for households with higher energy demands.

These home batteries are available in capacities ranging from 17-42kWh and can be directly connected to solar panels, allowing for more efficient charging.

Qurmit has also introduced the Qurmit XL, described as an industrial-grade battery with a capacity ranging from 57-800kWh and a power output of up to 90 kVA/72 kW.

Qurmit batteries, manufactured in the Netherlands, are made of over 50% recycled materials and are more than 95% recyclable, significantly reducing the environmental footprint of energy storage, the company said.