Amazon - Duracell Ion Speed 1000 Battery Charger + 4 AA Batteries $12.29

Wordwild Usage Charger - Freely charged by power bank,adapter, car charger etc. It’s so convenient!, Upgraded C807 Battery Charger - ETL certified and charging pair and single batteries as you liked: 1/2/3/4 pcs AA AAA batteries., Precharged AAA Batteries - Highest Capacity 1100mAh, Rechargeable up to 1200 times., Smart and Easy Indicator - Shows the charging progress by color (RED means charging, GREEN means fully charged.), Packages: AAA Rechargeable Batteris NIMH (8 Counts), C807 Battery Charger for AA AAA NIMH NICD Batteries x1, Micro USB Charging Cable x1, Battery Storage Case x2.

COMPATIBILITY- Works with all types of 6V and 12V lead-acid batteries that are less than 100Ah, such as AGM, GEL, SLA, Flooded (WET), Calcium type deep cycle automotive or marine 4.0Ah-100Ah 12V battery. GOOLOO battery maintainer charger is a great choice for cars, trucks (small), motorbike, lawn mowers, tricycles, electric vehicles, agricultural vehicles, off-road vehicles, pickup trucks, boats, yachts, and motorboats., 6-STAGE AUTOMATIC CHARGING - 12V battery charger operated with 6-stage automatic charging process by MCU controller: desulfurization, soft start, bulk, absorption, battery test, floating/trickle to indicate quantity of electricity and monitor the whole charging progress. Stops automatically when the battery is fully charged. (Cautions: Only 12v battery supports trickle charging), SMART BATTERY MAINTENANCE - Maintain various types of 6V or12V lead-acid batteries up to 100Ah. Intelligent control system with strong pulse repair technology, removes vulcanization, repairs slightly damaged batteries, reduces water loss, and can extend the battery life. Makes your battery more powerful., INTELLIGENT DETECTION & INTUITIVE LCD SCREEN - When low-voltage, vulcanization, or battery capacity loss is detected, LST battery maintainer charger directly prompts the user to repair and charge the battery or if the battery has lost its value, and is not repairable. LCD screen displays charging status, battery voltage/ current, and battery status clearly, providing visual feedback and diagnostic information even when in maintenance mode., MULTIPLE SAFETY PROTECTION FUNCTIONS – Made of fire retardant materials. It has multiple security protections, such as over-current protection, over-charge protection, over-heat protection, reverse connection protection, short circuit protection, fully charged stop protection, etc.