Ni-MH Battery for Crestron ST-BTPN SmarTouch 1550 SmarTouch 1700 ST-1550 ST-1700 Type: Ni-MH Capacity: 3600mAh Voltage: 4.8V Fit to the device models: Crestron SmarTouch 1550, SmarTouch 1700, ST-1700, ST-1550 Compatible with the battery part numbers: ST-BTPN RoHS Approved for toxic free All batteries are certified with CE and ISO9001 * Please check with your device model number and battery part number, both have to be match as stated in the listing. Any questions, please feel free to contact us. We promise to dispatch your order within one working day of receiving verified payment. Please exclude weekends and holidays on all shipping. As a UK seller, all our goods are sent from the UK, except international shipping address. Majority of UK orders are delivered within 1-3 working days for 1st Class Delivery and 3-5 working days for 2nd Class Delivery; however this will depend on Royal Mail. For urgent orders, we would recommend Next Day Courier service, we open 5 days a week between 10am and 5pm Mon to Fri. We accept all major debit and credit card through PayPal. If you would like to use other payment method. please contact us.