Kyocera TXBAT10159 E1100 Neo Mako S4000 Original OEM Battery - Non-Retail Packaging - Grey This battery is super sleek lightweight and most importantly, reliable. This is an original OEM battery by Kyocera that will provide your Kyocera devices with 790 mAh of optimized power. Expect the best possible talk and standby times with this original OEM Kyocera battery. The Kyocera Standard Battery. This battery is super sleek lightweight and most importantly, reliable. ^This is an original OEM battery by Kyocera that will provide your Kyocera devices with 790 mAh of optimized power. ^Expect the best possible talk and standby times with this original OEM Kyocera battery. ^The Kyocera Standard Battery.