ZPower has made a few promises before that haven't exactly panned out, but that apparently hasn't stopped it from making another bold claim at IDF this week, with it boasting that its newfangled Silver-Zinc battery will be rolled out in a "major notebook computer" sometime in 2009. According to ZPower, that battery will provide up to 40% more runtime than traditional lithium-ion batteries and, just as importantly, be far more "chemically stable" than its sometimes explosion-prone lithium-ion counterpart. ZPower also looks to be going the extra mile when it comes to recycling the batteries, with 95% of the battery itself apparently recyclable, and the company offering "financial discounts" to folks when they trade in their old Silver-Zinc batteries.