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?
☆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
K&F Concept 1100mAh NP-FW50 Battery with Type-C Fast Charging for Sony ZV-E10, Alpha 7, A7, A7II, A7RII, A7SII, A7S, A7S2, A7R, A7R2, A5000, A6400, A6500, A6300, A6000, NEX-3, NEX-5, 2 Pack
USB-C Fast Charging: This NP-FW50 battery has a USB Type-C charging port that reduces charging time by 30% compared to other USB-C camera batteries,
SMALLRIG NP-FW50 1030mAh Camera Battery for Sony A7S II / A7R II/ZV-E10, USB-C Fast Charging Rechargeable Camera Battery for Sony A7, A7S, A7R, A6400
SMALLRIG NP-FW50 1030mAh Camera Battery for Sony A7S II / A7R II/ZV-E10, USB-C Fast Charging Rechargeable Camera Battery for Sony A7, A7S, A7R, A6400, A6500, A6300, A5000, A5100, A6000, RX10-4330
Synergy Digital Camera Battery, Compatible with Sony NP-FW50 Digital Camera Battery - Ultra Hi-Capacity - (1500 mAh 7.2v) : Camcorder Batteries : Electronics
☆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
Compatible Replacement Battery for: Bower XPDSFW50 Dantona CAM-FW50 DigiPower BPFW50 Digital Concepts VIV-SB-FW50 Duracell DR9954 Empire BLI-395
Synergy Digital Camera Battery, Compatible with Sony NP-FW50 Digital Camera Battery - Ultra Hi-Capacity - (1500 mAh 7.2v)
SMALLRIG NP-FW50 1030mAh Camera Battery for Sony A7S II / A7R II/ZV-E10, USB-C Fast Charging Rechargeable Camera Battery for Sony A7, A7S, A7R, A6400, A6500, A6300, A5000, A5100, A6000, RX10-4330
Powerextra 2 Pack Replacement NP-FW50 Battery & Smart LCD Display Dual Channel Charger for Sony Alpha a6500, a6300, a6000, a7, a7s, a5100, a5000, a7r, a7 ii Cameras : Electronics
Compatible with these Sony models that use NP-FW50 batteries: Sony A6000 A6500 A6400 A6300 A7 A7II A7SII A7S A7S2 A7R A7R2 A7RII A55 A510 RX10 RX10II
Powerextra NP-FW50 Battery and 3 Channel Charger LCD Display Compatible with Sony ZV-E10 A6000 A6500 A6300 A7 A7II A7SII A7S A7S2 A7R A7R2 A7RII A55
3rd Party NP-FW50 Battery Recommendations: Sony Alpha / NEX E-mount (APS-C) Talk Forum: Digital Photography Review
Compatible with these Sony models that use NP-FW50 batteries: Sony A6000 A6500 A6400 A6300 A7 A7II A7SII A7S A7S2 A7R A7R2 A7RII A55 A510 RX10 RX10II
Powerextra NP-FW50 Battery and 3 Channel Charger LCD Display Compatible with Sony ZV-E10 A6000 A6500 A6300 A7 A7II A7SII A7S A7S2 A7R A7R2 A7RII A55
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