Various sizes, custom configurations

NiMH batteries from Hong Kong come in D, C, AA, AAA and 9V sizes, and customized packs. These comply with strict environmental regulations for entry into major markets such as North America and the EU. Makers also offer models for price-conscious buyers and emerging markets.

Extending the shelf life and charging cycle, and raising the storage capacity remain R&D thrusts.

The environment-friendly models are precharged and ready to use upon purchase.

Strong will Ultra-Power Battery Technology supplies button cell, cylindrical, prismatic and 9V NiMH batteries and packs. The last can be tailor-made using AA or AAA batteries with a universal plug attached. Aside from working with OEM customers, the company markets unbranded units and retail-packed NiMH versions carrying the in-house Xtra- Power brand.

Hong Kong has a steadily growing supplier base for the line. This currently consists of at least 20 enterprises, most of which also offer battery chargers. Products are usually bundled as sets.

Many makers are specialists in other battery types such as primary, lead-acid, lithium and alkaline. These have cooperative ventures with mainland China factories that have the facilities for NiMH manufacture. Others from the accessories and power supply sectors provide NiMH batteries under their brands through mainland subcontractors.