So these batteries are lithium 3.7v 3000mah batteries, but have a regulator that restricts volts to 1.5v. so they maintain a constant 1.5v until they die. So the only problem maybe that they may die without a low battery notification first. Otherwise, they are rechargable AA battery with 1.5v.
Anyone try these?
KENTLI 4 pieces KENTLI 1.5v AA Rechargeable Battery 3000mWh Lithium-ion Polymer Battery AA Batteries https://www.amazon.com/dp/B019O4WISY/ref=cm_sw_r_cp_apa_We8GAbBWTT31P