Frequently Asked Questions (FAQ)
who / what is sostin group?
Sostin Group is 2 x UK Official Registered Limited Companies (Elerix Ltd (Est 2021) and Unimed Ltd (Est 2003)) with (Thunder Sky) Winston Battery UK (Thunder Sky Winston Battery (Est 2002) and Ultimatron UK as Trading names under STRICT LICENCE Agreements from Parent Companies since 2018
Sostin Group also has a 'sister' company based in Barcelona OneStopYacht SL (Est 2014 - Company Registered in Spain) with an office in UK - OneStopYacht UK
who is your sister company?
They are based in Barcelona with a UK Office who work with clients in the Marine and Oil and Gas Industries*SpainWorldwide Superyacht Supply UKOneStopYacht UK
What is your country of origin of the cells and batteries
Most of the products sold under the brand ELERIX are made in China. Let´s face the truth: actually, more than 80% of products sold in the EU are made in China. Production capacities, their technical background hand in hand with logistic infrastructure is high and more efficient then here in Europe, but more importantly: it´s alreadyup and running. The manufacturers we are in cooperation have everything in order to produce high quality products: large premises with cutting edge technologies, experience and know-how in large scale manufacturing, just to mention the most important aspects. There is a number of different manufacturers and suppliers to choose from: we „just“ made that final selection of the best ones for us and for you*All ELERIX batteries are manufactured in renowned factories in China, owned by Foxconn (which also makes iPhones for Apple) and Tsingshan Group, China’s largest metals company.
why is price high on the internet?
If it were so easy business with so high profit, everyone would do it☺ In fact, even the application of the yellow packaging is not a simple task. Sure, it has its cost but in total, it is marginal. What objectively makes our prices higher are these reasons: first of all, the cells (and batteries that are made from) are an A-grade quality. Furthermore, it took us hundreds of hours in search for manufacturers, visiting them in person on sites, testing their products and fine-tunning them in regard to our requirements. Then there are costs related to the local warehouse (products are here, you do not have to wait weeks or months). Let´s continue with costs related to warranty extension, possibility to claim back either your money or a new product for a defective one as well as a possibility to consult the technical expert. And last but not least there are customs and tax fees. Saving you time, providing you comfort and peace of mind is something which is worth that extra money. The remaining part is profit.
Do you offer customer support?
Yes, we offer customer support. You can reach our team via phone, email, for assistance with any inquiries or issues you may encounter.
Frequently asked questions
why is the price of shipping / delivery costs High ?
We accept returns within 30 days of purchase. Items must be unused, in their original packaging, and accompanied by a receipt or proof of purchase. Please visit our Returns page for more details.
How long does shipping take?
Shipping times vary based on your location and the shipping method chosen. Standard shipping typically takes 5-12 business days,
what are winston (thunder sky) cells and batteries?
Water-based lithium power battery - is the only globally insured product by international AXA and AIG insurance companies
Modular Solutions / Configuration - Wide selection of sizes - allowing transparent design to easily check or replace single cell
more information here -Thunder Sky Winston Battery UK
Modular Solutions / Configuration - Wide selection of sizes - allowing transparent design to easily check or replace single cell
more information here -Thunder Sky Winston Battery UK
What payment methods do you accept?
We accept major credit cards (Visa, MasterCard, American Express), PayPal, and other secure payment methods. All transactions are encrypted for your safety.