IDX System Technology SL-F50 NP-F Lithium-Ion Battery The IDX System Technology SL-F50 Lithium-Ion Battery is a 48Wh lithium-ion battery that can power cameras and accessories compatible with Sony L-series (NP-F) batteries. Additionally, the 7.2V X-Tap and 5V USB outputs can be used to power accessories simultaneously. To use the X-Tap...