With a total capacity of 3500mWh, these batteries are perfect for both high and low drain devices, as well as solar/wind devices.
eBay
1-20 PCS 18650 battery 3.7V 4200mAh rechargeable liion battery for Led flashlight Torch batery litio battery
Aliexpress UK
Claims of high capacity Lithium-ion 14500 size batteries. Battery capacity: 800mAh. Material: Aluminium with PVC casing. Do not confuse this type of battery with the similar size 1.5v AA batteries.
eBay
523450/503450 Polymer Lithium Rechargeable Battery Lithium Ion Battery PH2.0 2pin 3.7V 1000mAh for MP5, Smart Watch, Speaker
Aliexpress UK
There is an on/off switch on the battery. Can be used to 12V power in various fields. This battery cannot be used for Motor, fan, air pump, water pump. Reciprocating Cycle Linear Act. When charging this item, turn the switch on.
eBay
12V High Capacity Universal Rechargeable Lithium-Ion Battery for Power Tools Angle Grinder Electric Drill Li-ion Battery
Aliexpress UK
3000mwh li-ion long-lasting Convenient long-lasting double a batteries. Capacity: 3000mWh. Capacity: 1200mwh. AAA 1.5V Battery AA 1.5V battery.
eBay
BaKKiter 1.5V AA 5800mAh+AAA 3600mAh Updated Rechargeable Lithium Ion Battery Fast Charging Li-ion Batteries /USB-C Cable /Free
Aliexpress UK
Capacity: 2800mAh. The 16340 battery Can replace for CR123, CR17345, K123A, VL123A, DL123A,5018LC, SF123A and EL123AP. Size:16mm 34mm.
eBay
21V Rechargeable Lithium Ion Battery High Capacity Cordless Electric Power Tool Battery For Makita 21V Tool Replacement Battery
Aliexpress UK
With a capacity of 5000mAh, it provides long-lasting power for your lighting needs. The battery is designed with a flat top and is suitable for unit type applications.
eBay
12v Battery pack rechargeable lithium ion battery solar Electric toy car Storage battery with BMS
Aliexpress UK
AA Batteries AAA Batteries:Features 2/4/6/8/10x 2-in-1 USB Charging Cable. 3300mWh li-ion long-lastingConvenient long-lasting double a batteries.
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21V Rechargeable Lithium Ion Battery High Capacity Cordless Electric Power Tool Battery for Makita 21V Tool Replacement Battery
Aliexpress UK
Over-current protection---Constant current mode to prevent current fluctuations on the impact of the battery.
eBay
Makita 18V 8000mAh Rechargeable Lithium Ion Battery With Battery indicator For Makita BL1830 BL1840 BL1850 Power Tool Battery
Aliexpress UK