I did have a backup camera which used the same Sony NP-FW50 battery. Could I use the backup camera as an improvised battery charger?
Li-Ion NP-FW50 Hi Capacity Battery for Sony Alpha a6400 ILCE-6400
LP-NP-FW50 Battery Pack and Portable Charger,LP 2-Pack Replacement Battery Compatible with Sony Alpha A6000, A6400, A6100, A6300, A6500, A5100, A7, A7 II, A7R, A7R II, A7S, A7S II and Other
【Powerful Battery Capacity】Two 7.4V Li-ion 1950mAh batteries, professional replacement of Sony NP-FW50 batteries. Designed specifically for your
LP-NP-FW50 Battery Pack and Portable Charger,LP 2-Pack Replacement Battery Compatible with Sony Alpha A6000, A6400, A6100, A6300, A6500, A5100, A7, A7
Sony Rechargeable Lithium-Ion Battery for NP-FW50 NPFW50 - Best Buy
LP-NP-FW50 Battery Pack and Portable Charger,LP 2-Pack Replacement Battery Compatible with Sony Alpha A6000, A6400, A6100, A6300, A6500, A5100, A7, A7 II, A7R, A7R II, A7S, A7S II and Other
Sony Rechargeable Lithium-Ion Battery for NP-FW50 NPFW50 - Best Buy
【Powerful Battery Capacity】7.4V, 1500mAh rechargeable Li-ion batteries use high quality cells for longer battery life with no memory effect. 【Comes
Pickle Power NP-FW50 Battery, 2 x 1500mAh Batteries for Sony Alpha A6500, A6400, A6300, A6000, A3000, A5000, A5100, A7II, A7RII, A7, RX10 NEX-3/5/7
☆INTELLIGENT DETECTION: Read the real capacity of batteries charged from 0 up to 100%. Automatically adapts to USB input power and detects battery
NP-FW50 Dual Slot Battery Charger for Sony NP FW50 Batteries for Sony Alpha A6400, A6000, A6300, A6500, A5100, A7, A7II, A7RII, A7SII, A7S, A7S2, A7R
LP-NP-FW50 Battery Pack and Portable Charger,LP 2-Pack Replacement Battery Compatible with Sony Alpha A6000, A6400, A6100, A6300, A6500, A5100, A7, A7 II, A7R, A7R II, A7S, A7S II and Other
DOTTMON NP-FW50 Dual Slot Battery Charger for Sony NP FW50 Batteries for Sony Alpha A6400, A6000, A6300, A6500, A5100, A7, A7II, A7RII, A7SII, A7S, A7S2, A7R, A7RII, A55, RX10 Camera Battery
【Powerful Battery Capacity】Two 7.4V Li-ion 1950mAh batteries, professional replacement of Sony NP-FW50 batteries. Designed specifically for your
LP-NP-FW50 Battery Pack and Portable Charger,LP 2-Pack Replacement Battery Compatible with Sony Alpha A6000, A6400, A6100, A6300, A6500, A5100, A7, A7