Replacement 3V Battery for Yamaha DX7 TX7 DX21 TG77 RX15 RX17 RX21 + many

New Replacement 3V Coin Battery and Holder with Wire leads + Velcro mount For Yamaha DX7, TX7, DX21, DX27, DX100, RX15, RX17, RX21,SY77, TG77, TX802, TX81Z, Korg DW-8000, Poly-800 MKII, Akai AX60, Kawai K1r, Roland TR-505 , along with many others that use a 3V CR2032 battery Requires desoldering and soldering to install. Installation of this part along with any associated risks involved in the process are the responsibility of the buyer. Be sure to back up any data and unplug the unit before installation. Included with purchase: 1x   -  NEW 3V Sony / muRata Coin Cell Battery CR2032 1x   -  Battery Holder with ~9 - 10" lead wires 1x   -  Set of Velcro Sticker Dots for mounting the battery holder Photos show battery installed in a DX7, RX15, RX17, and RX21. Battery is compatible with other models as well. Some of the photos are of an older model but functionally as the current version, this model differs slightly from previous versions. Newest version is shown in the first photo. Installed photos show wired leads twisted, leads do not come twisted, you can twist the leads on your own if you desire Wire leads may be cut and stripped to desired length. Wire leads are approx. 9 - 10 inches in length. Red is positive. Black is negative NOTE : Almost all of the available coin cell battery holders for this type of battery have a 20mm lead spacing, the original batteries in these Yamaha units have a ~14mm spacing, making the 20mm holders incompatible without making modifications. Since this holder has wire leads it makes it more universal and compatible with a variety of lead spacing pcb mount footprints. Installation: Backup any data you don't want to lose Turn off and Unplug the unit Open unit and locate the battery Make note of the position of positive and negative pins of the battery Cut the original battery from circuit board, desolder the remaining battery pin leads from the circuit board Solder in the battery holder wire leads, be sure to solder the Red wire to positive and Black wire to negative Mount the battery holder, insert the new battery into the battery holder Be sure not to short out the battery pins located on the underside of the battery holder on any metal on your synth Ask questions regarding this item before purchasing. No international shipping available. Shipped within the 50 United States only. Shipping and Handling Terms: Handling Time: Up to 4 business days after receiving cleared payment (not including Saturdays or Sundays) Shipping Time: Varies based on location (USPS First-Class generally 2-7+ days) Explanation: After cleared payment is received it may take up to 4 business days for your order to be taken to a USPS Post Office  USPS First-class estimated delivery time is generally between 2-7+ business days and varies by location. The E-bay estimated delivery times shown at the top of the page are only an estimate, they are not exact and are not guaranteed. The actual time will often vary, please keep this in mind when choosing to place an order.