Synergy Digital GPS Battery, Works with Spectra MobileMapper 10 GPS, (Li-Ion, 3.7V, 3000 mAh) Ultra High Capacity, Compatible with CHC 206465 Battery - Walmart.com
HUMSER MG-4LH,BP-4L Lithium Ion 3.7V 3000MAH Rechargeable For RTK,GPS,Data Controller 206465 Battery - HUMSER : Flipkart.com