2 x 21700 Li-ion Rechargeable Battery | Suits H15R Core, H15R Work, H1 | Ledlenser USA
Kastar Battery 4-Pack Replacement for Nitecore UT27 Rechargeable Headlamp Review HLB1300, LED Lenser Lithium-Ion Battery LED Lenser SEO Headlamp - 7784, SEO7R, SEO5 AND SEO3 Head Torch - Walmart.com