Testing of KIWIGREEN for ZR 5800 is now complete: Results are in summary: 1. The KIWIGREEN battery pack will drive your Zaurus 5800 for over 1 week with a PCMCIA modem on board. 2. You can drain down the INTERNAL (alkaline x 2 or lithium AA) and still continue using the Zaurus without replacing the internal cells. 3. We short out the KIWIGREEN battery pack for 36 hours using a nail and plyers. This direct short did not damage the cells at all. Our safety switching had done it's job well! We recharged cells ( they did not need much) with the AUTOSMART charger. In 45 minutes KIWIGREEN was back in full charge with no damage to cells. Benefits: If you calculate out the cost of batteries - lithiums or alakaline, payback period is very quick. We estimate on NZ prices of dry cells it is: (a) 10 weeks to cover cost of battery pack. (b) 4 weeks to cover the bag cost. We are very happy with the final results and hope all you happy ZR 5000, ZR 5700 and ZR 5800 users are too! (NEXT week we are delivering our unit to our America's Cup team to help them beat Dennis in the next round!) Detail on KIWIGREEN can be obtained via Rupp Technology URL http://www.rupp.com or more detailed information from Mobile PDA Solutions on http://www.mobilepda.co.nz Please feel free to contact us! Product info: For the mobile professional we offer our deluxe deerskin leather case with built in KIWIGREEN long life rechargable battery pack. When the battery is fully charged it has a life of up to 5 days of continuous power. This battery was developed in New Zealand by Mobile World Communications for the Zaurus ZR 5000, ZR 5700, & ZR 5800 Mobile Office Solution for Rupp Technology AZ. The KIWIGREEN features small compact design, meets design specifications for UL1942, and has been tested and approved by International USA & UK testing authorities. Included is SMARTCHARGE autocharger to charge your battery in ONE HOUR in your car or truck! The KIWIGREEN rechargable battery is our contribution to: 1. Protecting our enviroment - no cadmium leaching from discarded cells! ( NICAD & DRY CELLS LEACH CADMIUM) 2. Giving you far greater operating time than the Sharp CE-BK1 at a fraction of the cost! Merv Carroll - Engineer Mobile Applications Compuserve 100400,1652 Internet: rgw@voyager.co.nz .