10x3.2V 3.6V 1A LiFePO4 Battery Charger Module CV/CC Charging Board Electric toy | eBay
Amazon.com: Shockli AA 3.2V Rechargeable Solar Battery with LiFePO4 Charger, AA 3.2 Volt LiFePO4 Solar Battery (4-Pack) for Solar Panel Outdoor Garden Lights : Patio, Lawn & Garden