Nu Battery Ltd

Nu Battery Ltd, UK specialist in lithium-ion batteries

Nu Battery Ltd is a UK retailer focused on the sale of lithium-ion batteries, with a catalogue built around the most common cylindrical formats: 18650, 21700, 26650 and 18350. The company presents itself as part of the Lithium Ion Group and states that it has more than ten years of experience in the sector.

Its offering combines direct sales to the public with specific lines for businesses and wholesale orders, and includes both individual cells and chargers from various brands and capacities.

Available formats and connection types

The catalogue is organised by cell size and by terminal connection type, a decisive factor depending on the intended use. Nu Battery sells batteries with three configurations:

• Flat Top: flat terminal, common in devices with pressure contact.
• Button Top: raised terminal, also available in a protected version, aimed at torches and similar equipment.
• Tabbed: designed to make repairing electronic devices easier, as they allow wires to be soldered to the cell without the need for a spot welder.

The company highlights the latter option as a way to simplify electronic repair tasks.

18650 and 21700 batteries in the catalogue

Among the 18650 format cells shown on the site are models from Ampace (INR18650-JP30, 3000 mAh and 36 A), EVE (25P, 2500 mAh and 20 A), Molicel (INR18650 P28A, 2800 mAh and 25 A) and BAK (N18650COP, 2500 mAh and 30 A). In the 21700 format, references include Ampace INR21700-JP40 (4000 mAh and 70 A), Ampace INR21700-JP50 (5000 mAh and 60 A), BAK 53E (5300 mAh and 10.3 A) and BAK N21700-45D (4500 mAh and 60 A).

The product pages detail capacity, continuous discharge current, brand, model and size, and some references were out of stock at the time of analysis.

Chargers and supply for businesses

Alongside the cells, the shop offers lithium, nickel-metal hydride and nickel-cadmium chargers, with models such as Nitecore i2 and Q4 and XTAR X2 and X4, in two and four bays. For the trade channel, Nu Battery maintains wholesale lines for 18650 and 21700 batteries and chargers, as well as a section of products ready for vape shops and retail.

The catalogue is completed with accessories such as cases and battery tubes, batteries in other sizes and collaborations under the name Nu Battery Colabs.

Industrial customers and research projects

The company states that, as part of Lithium Ion Group, it regularly supplies electric vehicle manufacturers, personal transport system designers, military contractors, the aerospace sector and the solar photovoltaic industry. It also notes that it has developed partnerships with several universities for the development of energy recovery and storage solutions.

Nu Battery states that all its batteries comply with the EU battery directive and that its offering is based on genuine, batch-tested and traceable products, in a market it describes as saturated with fake or low-quality cells.

Shipping and customer service

The shop operates from stock in the United Kingdom and dispatches orders the same day if placed before 15:00, Monday to Friday. Free shipping via DPD with next working day delivery applies to orders over £49.99. The company also offers account registration for trade customers and contact channels to resolve questions about choosing a product.

Location and contact

Unit 21 Granary Court, Alton Rd South Warnborough, Hook RG29 1RP · Email: hello@nubattery.co.uk · Hours: Phone support: 10:00 to 16:00, Monday to Friday