I don't think much of the Lumintop battery capacity specifications. 180 mAh battery to drive a total of 130 lumens is a recipe for a short run time between charges. I often suggest a pair of Lezyne Drive
clones readily available from US sources on eBay for under $10 a pair including shipping. The internal USB rechargeable battery is 500 mAh. That meant I can use them in flashing mode for several days worth of rides before recharging them. One white and one red light $9.58 postpaid
https://www.ebay.com/itm/165623980506