Hoppecke in global projects to supply batteries for PV power

German industrial battery company Hoppecke has installed two village lead battery power projects in the tiny African country of Togo, the company announced on April 21.

Hoppecke’s Sun Power VL vented lead-acid batteries have been installed to store solar power in villages that are off grid and where electricity supply is at best unreliable.

Technicians often have to travel long distances to make repairs or carry out maintenance, so the batteries, which have high cycle stability during partial state of charge due to their tubular plate design and efficient charge current acceptance, are suitable for these conditions, the company says.

They also have higher short circuit safety, and maximum energy efficiency with an optimized electrolyte.

Hoppecke’s Sun Air electrolyte circulation system pumps ambient air into each battery cell. This causes air bubbles to rise through the electrolyte, ensuring a homogeneous electrolyte density distribution in each cell – increasing charge efficiency and lowering the corrosion rate.

Because the movement ensures there is no acid stratification, the battery life is extended, the firm says.

According to Hoppecke, the system switches on and off automatically and is virtually maintenance free.

Hoppecke has also partnered the Singaporean solar firm Sunseap to store energy for the largest tennis academy in Singapore, the Tanglin Academy, to reduce the centre’s reliance on the diesel generator used to back up energy from its solar panels.

Sunseap’s senior manager of special projects, Shawn Tan, was quoted by the company as saying the partnership with Hoppecke had prompted interest from other potential clients keen to adopt off-grid clean energy on a much larger scale.

Hoppecke’s batteries are used in many applications including trains, and in the UK they can be found in around 50% of locomotives as well as around 75% of Siemens trains around the world.