You might also be interested in these 3.7 v 1800mah rechargeable lithium battery.
VENNERLI Rechargeable Lithium Batteries with USB-C Cable Fast Charging Battery 3.7V 7400mWh High-Capacity 2000+ Cycles Ultra-Long Lasting Time Durable Cycle Smart Charging LED Indicator (2-Pack Set)
VENNERLI
£ 15.99
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ViCep 3.7V Lithium Polymer Battery 2000mAh 103454 Rechargeable with Wires and JST-PHR-02 2-Pin Connector for Bluetooth Speaker and Wireless Device- Confirm Size & Polarity Before Purchase
ViCep
£ 9.99
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Wxeadu 4 Pcs 3.7V 3000mah Li-Ion Battery,Rechargeable Lithium Batteries with 4 USB Charger SM-2P Plug Connector,Universal Li-ion Battery for Remote Control Cars/rc Truck/Robots/DIY Electronics Product
Wxeadu
£ 13.99
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3000 mAh 3.7V Rechargeable NiMH Battery,POWO18B Button Top NiMH Battery with Protection Box,NO.:1818-666-888B,for Camera,Small Fan,LED Headlamp,Product Patent Number: 6319876 (4 Pack)
POWOBEST
£ 10.99
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3.7V 1800mAh 804050 Lipo Battery Rechargeable Lithium Polymer Ion Battery Pack With JST Connector
Voltage: 3.7V; Capacity: 1800mAh
£ 22.42
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4PCS 3.7V 1800mah Lithium Battery with 4 in 1 Charger for E88 E88PRO E88MAX E525 E99 E99PRO P1 P5PRO K3 S1 P8 RC quadcopter drone accessories spare li-ion battery
BLLRC
£ 23.99
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Hojalis 3.7V 800mAh Li-ion Battery, 4 Pcs RC Rechargeable Batteries with Usb Charger SM-2P Plug Connector, Universal Lithium Battery for RC Car Off Road Truck Jumper Vehicle Drift Monster Toys
Hojalis
£ 10.59
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7% off
18500 Rechargeable Batteries, 3.7 V 1600 mAh Lithium Batteries, Pack of 2
Nyctophos
£ 12.99
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CELLONIC Battery compatible with Sony PSP Slim & Lite 2, 3, PSP-S110 | 1800mAh, 3.7V, Lithium-Polymer for Sony PSP-2004, PSP-3004
CELLONIC
£ 12.90
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Homemaxt 103450 3.7 V 1800 mAh Rechargeable Lithium Polymer Battery for MP3 GPS Navigation Headset E-Book Camera
Homemaxt
£ 8.05
free shipping
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Fayerkar 3.7 V 3000 mAh 974058 Rechargeable Lithium Polymer Battery Replacement for DIY Electronic Products with 3.7-5 V Movable Energy Storage Energy LED Lights
Fayerkar
£ 10.79
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Rechargeable battery compatible with Pure Digital Pocket DAB1500 1800mAh Li-Polymer
Gato
£ 13.00
free shipping
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15% off
Which.One Highlight
3.7V Rechargeable Battery, 3300mAh Flat Top Rechargeable Batteries for Flashlight, Headlamp (2 Pack, 18 X 65mm)