4 Pack Vacuum Cleaner HEPA Filters for Cyclonic Series RO3753EA RO3731EA RO3786EA Adopts spring pin interface design, suitable for Jetson Orin series motherboards<br> Onboard lithium battery charging chip, supports dynamic path switching, and more stable power supply<br> Can communicate through 12C interface, measure battery voltage, current, power and remaining power and other parameters, and detect module working status in real time<br> Onboard battery protection circuit, anti-overcharge, anti-over discharge, anti-overcurrent, anti-short circuit and anti-reverse connection indicator light balanced charging, stable and safer operation<br> Onboard 3 21700 lithium batteries, can maintain longer standby time<br> Note:due to different production batches, the appearance printing is different, which does not affect the use.<br> Colour:As Shown<br> Material:Plastic<br> Package Contents:<br> 1 * Power module<br> 1 * Acrylic protection plate<br> 1 * Power cable<br> 3 * 21700 battery<br> 1 * Screw kit<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.