The batteries are too thick, you must to force a lot to insert, the "head" battery bad assembled, and the sticker makes it doesn´t fit, not recommended for insta360 one X. Too, 1200mah with less weight than originals? This could be ok due price (we know are cheap, and write capacity is free) but the size is different to fit correctly, poorly manufactured. the Charger arrived with a broken part inside, and a high pitch noise when charging, maybe bad luck, I´m afraid it will last some days...
Good batteries and charging box. Thank You