Canon G7X Mark II - got the battery warning after second full charge and about 20 minute's use.
If this occurs once per charge it won't bother me to save some money, but if it's going to be appearing frequently, and shutting my camera off as it does, it's going to be a problem. I can't be in the middle of critical Manual shots and have my camera shutting down.
π EBL Battery Charger Combo: Rechargeable AA Battery 2800mAh (4pcs) and AAA Battery 1100mAh (4pcs) + Charger for AA/AAA/C/D NiMH Batteries
39 Review
LCD Battery Tester For Universal Battery Types - AA, AAA, C, D, 9V, CR2032, CR123A, CR2, CRV3, 2CR5, CRP2, 1.5V/3V Button Cells With Included AAA Battery
29 Review
Fireproof Battery Organizer Storage Case: Waterproof & Explosionproof Safe Bag Fits 210+ Batteries - With Tester BT-168, Carrying Container Bag For AA AAA C D 9V Lithium 3V Holders
49 Review
TalentCell 12V Lithium-Ion Battery Pack For LED Strips, CCTV Cameras & More β Rechargeable With Multi-LED Indicator
44 Review