Dutch-manufactured gel lead-acid battery doubles lifespan, expands to C&I sizing

Energy storage manufacturer Qurmit has announced a new charging system for its lead-gel home batteries that it claims extends their lifecycle. According to the Eindhoven-based company, the “Qurmit Booster” charging technology enables its batteries to reach up to 9,000 charge cycles under specific usage conditions.

The company, a spin-off of Dutch off-grid solar specialist TSS4U, states this performance exceeds the standard charge cycle specifications provided by battery supplier Exide Technologies.

“Our technology ensures that the batteries last longer,” said Jan-Willem Linsen, founder of Qurmit, in a company statement.

The base Qurmit system stores 17.6 kWh of energy with 2.4 kW discharge and 2 kW charge rates. At 550 kg, the system is considerably heavier than lithium alternatives like the Tesla Powerwall 3, which weighs 130 kg for 13.5 kWh capacity. The company reports its gel lead-acid system operates across temperatures from -40°C to 55°C.

Qurmit has introduced additional products beyond its initial offering, including 3-phase battery systems with capacities between 17 kWh and 42 kWh. For commercial applications, the company has developed the Qurmit XL with stated capacity options from 57 kWh to 800 kWh and power output up to 90 kVA / 72 kW.

According to previous statements from the company, the lead-gel technology may address insurance issues some businesses face with lithium-ion systems, as insurers sometimes require additional safety measures for lithium batteries.

Qurmit reports that its batteries contain over 50% recycled materials and offers customers approximately €600 for returning a used Qurmit 17-1 model for recycling. The company claims its products are manufactured in the Netherlands with European-sourced components.

In response to an ESS News request, installation services for the Qurmit battery have expanded beyond the Netherlands market to Benelux with a representative also adding, “towards Q3 2025 we will look into entering other European markets.”