4PCS Rechargeable D Batteries,Lithium D Batteries LR20 Replacement

Eco-Friendly Value: Rechargeable D batteries support over 1, 200 charge cycles, equivalent to over 1, 000 uses of alkaline batteries. Significantly reduce long-term costs and battery wastestarting with us.
1.5 -Hour Fast Charging: Fully charge in just 1.5 hours using the included USB-C cable, also compatible with lithium battery chargers. LED indicator (blue flashing/blue steady) clearly displays charging status, letting you monitor progress at any time.
Long-lasting Performance: Maintains stable 1.5V output until depleted, ensuring consistent device operation. 3600mAh capacity delivers twice the runtime of alkaline batteries.
Ultimate Reliability: Multiple protection mechanisms (overcharge/overcurrent/short circuit) ensure safety.
Operating temperature range: -54°C to 60°C (-68°F to 140°F), suitable for both indoor and outdoor use.
Wide Compatibility: Works with all 1.5V D-cell battery devices, including high-power electronics. The 4-pack includes a 2-in-1 USB charging cable, forming a complete emergency kit with perfect after-sales service!