DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II III IV Bluetooth Headphones VDL603040 SR603040

Compatible with Marshall MID Major II Major III Major IV Bluetooth Headphones Battery Replacement VDL603040 SR603040。Also suitable for DIY electronic products with 3.7-5V and less than 2.96Wh 800mAh built-in 3-wire battery replacement.（ Not applicable to high-power electric tools and model aircraft） Please note that the specifications and polarity of the connector are based on the product display image,the red wire is the positive "+" and the black wire is the negative "-"，White wire is thermistor "NTC"，Do not reverse-charge or reverse-connectreverse. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire. 603040 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 800mAh, power 2.96Wh, size 41×30×6mm(1.594×1.181×0.236inch）(L*W*T), Weight:13.7g(0.487oz)，Maximum current:0.8A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit. It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3 wire 3302-26 high temperature resistant silicone cable module. If there are any quality issues within a year, please feel free to contact us via email for replacement.