SWIT KA-M20S DUAL POCKET V-MOUNT BATTERIES HOT SWAP PLATEPocket V mount Batteries Extender Hot swap application KA M20S is an extender plate for SWIT Pocket V mount Batteries. Installed with 2x PB M series batteries, the size is equivalent to a standard large capacity V mount battery, and the KA M20S plate can draw the 2 batteries one by one as hot swap mode, or use together as high load mode. Two Power Modes Hot Swap mode and High Load mode When the device power consumption is less than single PB M battery