RECHARGEABLE LITHIUM BATTERIES LITHIUM-ION POLYMER Looking for the leading custom-shaped lithium batteries in the UK? Then look no further. Our range of lithium-ion polymer batteries is characterised by their:

High energy density

Easily customisable appearance & flexible design

 Compact & Lightweight: Our lithium polymer batteries are designed to be small in size and lightweight, perfect for portable electronic devices.

Good safety

Yok Energy offers off-the-shelf and custom-shaped lithium polymer battery solutions to meet your product’s safety and electrical requirements. Backed by extensive technical knowledge and expertise, we collaborate with you to create the optimal lithium battery pack solution for your electronic device.

Our product models

Our product models

Lithium-ion Polymer


We’ve been supplying clients across the UK with high-quality custom-shaped lithium-ion batteries since 2009 and are proud of our track record of close engagement with our customers enabling us to provide the right solutions for their business. Lithium-ion polymer batteries are widely used in wearable products, smartphones, power banks, laptops, tablets and tracking devices etc. Our battery products cover 4.2V, 4.35V, 4.4V voltage systems, which can boost the capacity of the cell within the same dimensions. With industry-leading energy density, cycle life, discharge/charge rate, and coupled with fantastic support and competitive cost, YOK Energy is ideally placed to become your long-term battery partner.

Contact us today to explore our existing product range or a fully custom solution.

High Energy Density Cells

Explore our selection of High Energy Density Cells and find the ideal lithium polymer battery for your device within our extensive range of custom-shaped battery solutions. Our team collaborates closely with you to craft the perfect lithium-ion battery tailored to your specific requirements, regardless of industry or location within the UK.

* The following parameters are example data, intended for reference only. Please contact our sales staff for more details.

High Energy Density Cells

* The following parameters are example data, intended for reference only. Please contact our sales staff for more details.

Model Capacity (mAh) Voltage (V) Thickness (mm) Width (mm) Length (mm) Enquire
YE251020C 25 3.7 2.70 10.8 20.8 Enquire now
YE301220C 40 3.7 6.00 12.5 21.0 Enquire now
YE601417C 70 3.7 5.30 14.5 17.8 Enquire now
YE531518C 85 3.7 8.99 15.5 18.5 Enquire now
YE901313HPW 90 3.7 3.30 13.9 15.9 Enquire now
YE432832C 140 3.7 4.30 10.2 51.0 Enquire now
YOK731344P 380 3.7 7.30 28.5 32.5 Enquire now
YOK801460P 445 3.6 8.00 12.9 43.5 Enquire now
YE331051C 140 3.7 3.30 10.1 51.0 Enquire now
YE363568C 840 3.7 3.60 35.5 66.8 Enquire now
YE571885C 1000 3.7 5.7 18.8 86.0 Enquire now
YE4030158C 2100 3.7 4.10 30.5 158.0 Enquire now
YE784284W 3150 3.7 7.80 42.0 84.0 Enquire now
YE806580W 5000 3.7 8.45 65.6 80.6 Enquire now
YE7870170HPW 12000 3.7 8.05 70.1 170.9 Enquire now
YE1055275W 20000 3.7 9.44 55.5 275.6 Enquire now



YOK Energy technologies are constantly evolving, and we incorporate these advancements into the custom designs we carry out for our customers and partners around the globe. Whether looking to incorporate an off the shelf battery with more flexibility and no upfront tooling costs, or exploring the possibility of a fully customised solution, we will ensure to optimise the performance and safety well in to the future. Contact our team today.

Lithium ion Polymer Cells


High Energy Density
To meet the market need for smaller and thinner cells with better run times, Yok Energy is constantly working to develop improvements in energy density. To meet the design requirements of smaller size and larger capacity for competitive device markets.
High Power
With features including excellent high power capability, low internal resistance and long cycle life, Yok’s High Rate Li-ion polymer cells enable our customers to make lighter, more powerful and durable devices.
Fast Charging
Yok Energy can provide fast charge batteries without compromising long cycle life and high safety standards. The charging speed is several times faster than conventional standard cells.
Special Shaped Cells
Custom shaped batteries can be small and thin, with high energy density. Battery shapes are enabled by using our advanced stacking process, so that batteries can be adapted to the internal shape spaces of devices.


Safe and Consistent Over The Full Life Cycle

The safety and performance of lipo batteries are of paramount consideration when designing or updating an electronic device. As a manufacturer, you need to have the confidence and reassurance that the lithium battery will give optimum performance. During use, this includes a steady discharge of energy without overloading, with a long lifecycle. During downtimes, the batteries are recharged quickly and efficiently, without the risk of overcharging. YOK Energy builds all these considerations into the overall design of every customers battery design.

Speak to a Battery Specialist Today


    Trident House, 175 Renfrew Rd, Paisley PA3 4EF, United Kingdom

    +44 (0)141 255 0870

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