Upgraded 6500 mAh battery with 14.4 V for robotic vacuum cleaners. This replacement battery provides long-lasting power, with about 1500 charging cycles and a service life of up to 5 years. It is a compatible replacement for various robotic vacuum models. Widely compatible Compatible with D3, D4, D5, D6, D7, D3+, D301, D303, D5+, D502, D503, D701, D702, D703, D705 robotics. Part Numbers: 205-0011, 205-0013, 205-0028, 4INR19/65-2, 945-0225, 945-0266, 905-0496, 0810841012076. Note: Not compatible with D8, D9, D10 series. High quality and safe battery Built-in multiple safety protections. High capacity and quality. CE, FCC, and ROHS certified. No memory effect. Protection against overcharge, overdischarge, overheat, overcurrent, and short circuit to maximize safety and reliability. Tips For optimal durability, allow the battery to cool for 15 minutes after a cleaning session before charging. Applications and scenarios - Home cleaning: Replace a worn or degraded battery in D3, D4, D5, D6, D7, and related models to restore full cleaning power for daily household use. - Office or commercial spaces: Maintain uninterrupted cleaning routines in small to medium work areas by using a reliable replacement battery for D3, D4, D5, D6, D7, D3+, D301, D303, D5+, D502, D503, D701, D702, D703, D705 models. - Long or large area cleaning: Suitable for extended cleaning sessions on large floor plans or carpeted areas where extended run time reduces downtime between charges.