Why settle for two when you candouble the power and mix AA & AAA to suit all your devices?.
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60V 16S2P 50Ah 18650 Rechargeable Li-ion Battery Pack 67.2V Lithium Ion 50000mAh with BMS，Charger
Aliexpress UK
Over current / overload / temperature. Low cost portable power. Highly portable & easy to use. It is your responsibility to ensure you order a compatible battery with a suitable capacity for your application.
eBay
48V 13S2P 18650 Powerful Battery Pack, 10Ah Large Capacity Lithium Battery, Rechargeable Li-ion Battery Pack, with 54.6v Charger
Aliexpress UK
A smart LED indicator ensures safety during charging, making it easy to monitor battery status at a glance. 【 lithium Battery AA Battery Protection Features】 The AA lithium batteries incorporate an upgraded copper-gold top and advanced diaphragm winding structure, ensuring strong electrolyte adsorption to prevent leakage.
eBay
48V 13S2P 18650 powerful battery pack, 50Ah large capacity lithium battery, rechargeable li-ion battery pack, with 54.6v charger
Aliexpress UK
Capacity: 12V at 6800mAh. Over current / overload / temperature. Low cost portable power. Highly portable & easy to use. Short circuit & leakage protection. It is your responsibility to ensure you order a compatible battery with a suitable capacity for your application.
eBay
18650 Battery Rechargeable Li-ion Battery Pack 3.7V 4000mAh for LED Light Bluetooth Speaker Spare Replacement Original Battery
Aliexpress UK
✅ 8 Slots Integrated Charing Storage Box: 2 in 1 function with charging and storage, compact and stylish design leads a new trend. ✅ Smart LED Display: The LED light displays charging status.
eBay
3.7V 850mAh Rechargeable Li-ion Battery Pack For Nintendo GBA SP Gameboy Advance SP Replacement Batteries with Screwdriver
Aliexpress UK
The Li-ion Rechargeable Battery Pack is a high-quality product designed for vacuum cleaners, specifically compatible with Numatic models. With a voltage of 22.2V and a capacity of 2000mAh, this battery pack provides ample power for extended cleaning sessions. The pack includes one battery and is suitable for handheld use, making it convenient and easy to handle. The Henry brand ensures reliability and performance, making this battery pack a practical and essential accessory for your vacuum cleaner.
eBay
60V 16S2P 28Ah 18650 Rechargeable Li-ion Battery Pack 67.2V Lithium Ion 28000mAh with BMS，Charger
Aliexpress UK
12V Portable 1800mAh Li-ion Rechargeable Battery Pack /Power Pack UK Charger Features: Brand new and high quality. Specially designed for the system devices which use 12V power. Built-in ON/OFF switch to save power usage. Super storage capacity. Over-charge/discharge protection. With working indicator. Suitable for 12V devices 1800mAh Note: You may either receive part number DC-168 or YSD-12180 and are the same item. Specification: Dimension: 6.6cm x 3.7cm x 2cm - 2.60inch x 1.46inch x 0.79inch. Input voltage: 12.6V. Output voltage: 12.6-10.8V. Power wired and wireless cameras, and wireless receivers.
eBay
6F22 1500mAh 9V Micro USB Rechargeable Li-Ion Battery Pack Type-C Port for Microphone Toy Car Alarm Clock DoorbellRemote Control
Aliexpress UK
After comprehensive capacity: 50000mah (50ah). Internal protection circuit: over value, higher than exhaust, higher than current, short circuit protection! Combination: 13 series 2 and. Battery type: 18650.
eBay
60V 16S5P 20Ah 18650 Rechargeable Li-ion Battery Pack 2000W high-power with BMS for Motorcycle, Scooter, Bicycle
Aliexpress UK