DC 3.7V 800mAh 603040 Rechargeable Li-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Earphone DIY 3.7-5V Electronic Products

Description

🔋 Power your vibe, never miss a beat!

This 3.7V 800mAh rechargeable Li-ion polymer battery is engineered for Marshall MID Major II, III, and IV Bluetooth earphones, delivering 2.96Wh of reliable power in a compact 40.5x30x6mm form factor. Featuring advanced Japanese Seiko IC protection against overcharge, overcurrent, and short circuits, it ensures safe, long-lasting performance. Ideal for DIY replacements or compatible 3.7-5V electronics, it comes with a heat-resistant silicone cable and a one-year free replacement warranty.