Synergy Digital Lawn Mower Battery, Works with Gardena 8838 Lawn Mower, (Li-Ion, 25V, 3000 mAh) Ultra High Capacity, Compatible with Gardena 8838 Battery - Walmart.com
Amazon.com: Shentec High Capacity 6.0Ah 25V Lithium Battery Compatible with Gardena 8838,fit for Gardena Lawnmower 380 Li 4025 : Tools & Home Improvement