Join our Whatsapp Channel
Insights | Direct Info | No filter
Insights | Direct Info | No filter
VISIT US!
Open every Saturday 10 am – 4 pm
£50.00 GBP
THE ORIGINAL – RCXX™
PTK-5573
Smooth UK delivery — full UPS tracking included ✅
We ship directly with UPS. Your order is processed quickly, packed securely, and delivered with full tracking.
Real-time tracking updates from dispatch to delivery.
Fast processing — often dispatched within 24h.
🛒 No hidden costs – everything is transparent at checkout!
In stock, ready to ship
TWINT, PayPal, credit cards & Klarna invoice
Not sure? send us a quick message – we’ll help right away.
Express shipping, carefully packed

With Klarna, you can conveniently and hassle-free use “Pay by Invoice”, and also take advantage of the installment payment option.
Choose your preferred payment method: TWINT | PayPal | Klarna (depending on location/country) | Credit cards such as Visa, Mastercard, American Express, or USDC (crypto). Of course, common wallets like Google Pay and Apple Pay also work.
You can return the item without any problem as long as it is in the original packaging, unopened and unused. Once we have received and inspected the item, we will refund your purchase amount. Up to 14 days after purchase.
The ProTek RC 4S 90C 1800mAh Si-Graphene+ HV LiPo battery is specifically designed for applications where space and weight are critical —such as FPV racing drones, airplanes, crawlers, and other performance-oriented RC vehicles . With its compact dimensions of just 86.5 × 33.5 × 27.5 mm and a weight of just 175 g, this battery is over 25 g lighter than comparable standard LiPos—while delivering higher performance !
With LiHV charging specifications, the battery delivers a full voltage of 17.4 V instead of the usual 16.8 V – for more power and more consistent energy delivery throughout the entire discharge cycle.
Compared to conventional LiPo or LiHV cells , silicon graphene cells offer:
Better efficiency
Lower operating temperatures
Less internal resistance
Higher voltage throughout the discharge process
Longer running times & longer service life
More capacity per gram of weight
Laboratory tests show: Double the lifespan with a 1C charge , and even with higher charge cycles, the risk of cell damage remains low. The flatter discharge curve ensures a consistently high voltage until the end – perfect for performance-oriented applications .
Only 175 g weight – approx. 25 g lighter than standard 4S 1800mAh
Ideal for FPV racing, airplanes, competition crawlers & Co.
Higher energy density & lower center of gravity
15.2 V nominal voltage , up to 17.4 V at HV charging
90C discharge rate for high performance
2C Max. charging current , 1C recommended for maximum lifespan
Larger capacity per gram than standard LiPos
Improved power output, durability & efficiency
|
Akku Bauart |
|
|---|---|
|
Akku Typ |
|
|
Akku C-Rate |
|
|
Akku Gewicht in Gramm |
175 |
|
Akku Kapazität in mAh |
1800 |
|
Akku Spannung |
|
|
Akku Steckertyp |
|
|
Akku Spannung |
|
|
Akku Zellen |
|

£50.00 GBP
Whether you are an experienced pilot or a beginner - at RCXX.shop you will find everything your RC heart desires. Our product range extends from high-end models to high-quality spare parts and accessories. With years of experience and genuine enthusiasm for RC sport, we are at your side with specialist knowledge and the best advice.
Our large warehouse guarantees high availability of your desired products. Order today and benefit from our lightning-fast shipping. No long waits, no frustration - just unpack and get started!
RC model building is our passion! Our experienced team is on hand to provide you with know-how, tips and professional support. Whether you have technical questions or are looking for the perfect setup - we will help you quickly and easily.