Description This is a board with a few kinds of battery holder, help you to gain low power experiance or design battery project. Battery Holder includes: AG3 AG3 x1: Single AG3 battery holder = 1.55V AG3 x2: Two AG3 battery holder in series = 3.1V AG3 x3: Three AG3 battery holder in series = 4.6V AG13 AG13 x1: Single AG3 battery holder = 1.55V AG13 x2: Two AG3 battery holder in series = 3.1V AG13 x3: Three AG3 battery holder in series = 4.6V CR2032 / CR1220 Battery Holder, 3V (or Lithium 3.8V LIR2032) 18650 Lithium battery 3.8V, please manually install the connector on back side AA x2: Two AA battery in series = 3V, connected by jumper AAA: Single AAA battery 3V XH2.54mm and XH2.00mm connector input For series connected battery, please make sure you alwasy SAME new, same brand battery, otherwise it will all failed and hot. Other Board Features: On board 2×4 revsered connection protection mosfet and fuse Also direct 2×4 power output pins without protection On board LED holder On board pre-installed 10V/220UF capacitor to enforce the power One more reserved capacitor footprint Uasge: Connect jumper to each two pins port to enable the power input, only connect each channel. Or connect current meter to check the power drain Shipment: Include the main board, two 18650 battery holder which is not installed, one jumper. NOT include the LED or any batteries Application: Test the quality or performance of your battery Test or experiment the suitable battery for your project Test low power capabitliy from the battery to your project Test the power consumption of the battery or your project Documentation of the board map please see here.
