We offer comparable watt hours per liter (wh/l) to NiCd and NiMh. We overcome the memory problem with NiCD (our cells have no memory effect) and we overcome the charge retention problem of NiMH (our cells retain 97% of charge after one month while NiMH retains only about 70%). We overcome the safety and cost issues of LiIon by providing a product proven safe, and our cost per watt hour is considerably lower than LiIon.

* High value (Performance vs Price) provides the best combination of battery characteristics available among various chemistries (NiCd, MiMH, Li-Ion, Pb-Ac) at low cost.

* High energy density reduces the weight and volume required for a given energy equivalent.

* Simple charging requirements reduce the complexity and cost of designing charge control circuitry.

* Proven safety record of the mature sealed lead electrochemisty provides reliability without complex protection measures.

* Sloping discharge profile makes fuel gauging as simple as measuring cell voltage and load.

* Existing recycling infrastructure for conventional lead batteries has encouraged the highest recycling rate of any commercial product (98+%).

* Long cycle life depends only on the depth of discharge and allows for frequent opportunity charging without developing memory effects.

* Long float life of sealed lead actually prefers continuous float charging environments while other chemistries can tolerate it at best.

* Overdischarge recovery provides high charge acceptance and complete capacity recovery after total discharge.

* Low self-discharge rate provides long shelf life during storage (up to one year at room temperature). Retains 87% of charge after one month.

E-mail us for free brochures and preliminary price ranges. Don't forget to include your mailing address. Send E-mail to <aps@ddti.com>