Compatible with Logitech Harmony Touch,Harmony Ultimate Remote Controls 533-000083 533-000084 915-000198 915-000201 Battery ReplacementAlso suitable for DIY electronic products with 3.7-5V and less than 4.25Wh 1150mAh built-in 2-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 "-"yellow 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. 503450523450 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 1150mAh, power 4.25Wh, size 51×34×5.2mm(