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8000mAh 50C Hard Case RC Lipo Battery | 3S/4S/6S Optional for RC Cars, Drones & Boats, Compatible with MJX 10303/7303 DC2
sku:
€115,95 EUR
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Description
Core Product Highlights
- Large 8000mAh True Capacity for Ultra-long Runtime
Genuine full-capacity cells extend single-use time greatly. Fewer battery replacements for long-time racing, crawling and flight tasks. - 50C High Discharge Rate for Powerful Burst Output
Premium lipo cells deliver stable high-current output with instant throttle response. No voltage drop under heavy aggressive loads for consistent power performance. - Hard Shell Structure for Enhanced Impact Resistance
Rigid outer casing protects the battery from squeeze and collision damage. Ideal for off-road rough use with longer service life. - Multiple Voltage Options for Wide Compatibility
3S/4S/6S versions available to fit RC off-road trucks, crawlers, drones and RC boats. Perfect match for mainstream models including MJX 10303 & 7303. - Full Automatic Production & Multi-stage Quality Inspection
Standardized full production workflow with strict multi-point testing. Highly consistent cells prevent swelling and leakage for reliable charge & discharge performance.
Detailed Product Advantages
- Precision Automated Production & Strict Cell Screening
Complete standardized manufacturing process includes electrode batching, coating, calendering, slitting, die-cutting, lamination, welding, sealing, liquid injection, formation, aging and final inspection. K-value testing and long-time static screening ensure ultra-consistent cells with minimal voltage difference under high loads. - High-performance Lipo Cells with Stable Power Output
Special power-grade lipo cells support continuous 50C high-rate discharge. Low power attenuation under heavy loads for steady performance during high-speed racing, steep crawling and drone high-thrust flight. - Hard Shell Construction for Harsh Outdoor Use
Thickened rigid casing guards against compression, crash impact and sand abrasion. Much stronger durability than soft-pack batteries for frequent heavy-duty use. - Broad Compatibility with Mainstream RC Devices
Works perfectly with MJX 10303, 7303 RC buggies, as well as various drones and RC boats. Plug-and-play installation with no extra modification needed. - Factory Direct Supply & Complete After-sales System
Original factory direct sales guarantee authentic quality. Supported with 7-day free return & exchange plus 3-month warranty. SF Express shipping with free return shipping and dedicated customer service.
Important User Instructions
- Fully charge the battery before first use. Full voltage per single cell is 4.35V. Never overcharge. Only use dedicated chargers with overcharge protection. Do not charge unattended.
Stop discharge immediately when single cell voltage drops near 3.6V. Voltage below 3.5V will cause permanent over-damage to cells. - Storage rules: Maintain single cell voltage at 3.80V~3.85V if idle for over 72 hours. Perform a small-current charge-discharge cycle monthly for storage longer than 1 month.
- This battery is NOT waterproof. Keep away from liquids and humid environments to avoid internal short circuit.
- Do not touch leaked electrolyte. Rinse exposed skin or eyes with plenty of clean water and seek immediate medical help if contacted by battery fluid.
- Keep battery away from open fire and high-temperature heat sources.
- Store the battery out of reach of children and pets.
- Never disassemble or modify the battery privately. Improper disassembly may lead to short circuit and fire hazards.
- After vehicle crash or drone crash, take out the battery and inspect for overheating, leakage, abnormal smell, damaged wires and abnormal voltage. Do not reuse until fully confirmed safe.
After-sales Service Policy
- 7-Day Free Return & Exchange: Please check appearance and size compatibility right after receipt. Items must be kept brand-new unused. Returns are unavailable for cut wires, stains, scratches, overcharge/over-discharge damage or man-made faults.
- 3-Month Warranty: We offer a 3-month warranty from the shipping date for non-manufacturing quality defects. Customers can send back items for maintenance.
- Custom Product Note: Customized connectors or custom specifications are non-refundable for non-quality issues.
- Disclaimer: This product is only an accessory for model devices. Users must comply with local laws and regulations. Any failure caused by self-modification or improper operation shall be borne by users. Product photos may have color difference due to shooting light; actual product color shall prevail.
- Logistics Service: Shipped via SF Express with free return shipping for worry-free after-sales support.
Return & Exchange Policy Compliant with EU Regulations
Return & Exchange Service Procedure
If you wish to exercise your statutory right of withdrawal and submit a return or exchange request, please contact customer service by email at info@crawltin.com.
Once your application is approved, we will send you an official Return Merchandise Authorization (RMA) via email, together with complete return instructions and warehouse receiving information.
Please pack the goods properly as instructed and ship them back to our designated return warehouse in China using compliant international couriers. The full recipient address will be provided together with your RMA document.
After receiving and inspecting the returned goods, we will complete the refund or exchange process within 14 calendar days. Refunds will be issued to your original payment account.
Important Legal Reminder: Your statutory unconditional right of withdrawal under the 14‑day cooling‑off period shall not be restricted by any clauses below. The following general terms apply only to requests submitted after the cooling‑off period expires.
Full‑Coverage Return & Exchange Policy (Seller‑Liable Circumstances)
You are entitled to a free full refund or exchange, with all round‑trip shipping and replacement‑related fees borne by us, if any of the following seller‑liable situations occur:
Within the statutory 14‑day cooling‑off period, if you submit a return request for personal reasons (change of mind, personal dissatisfaction, etc.), you shall bear the cost of shipping the goods back to our return warehouse in China.
Non‑Returnable & Non‑Exchangeable Situations (Permitted under EU Legislation)
For orders without valid quality defects once the statutory 14‑day cooling‑off period has expired, we reserve the right to reject return, exchange and compensation requests falling into any of the categories below:
Precautions for Returns & Exchanges
Statutory reasonable‑inspection exception**: Unpacking and reasonable trial use to verify the properties, functions and specifications of goods within the 14‑day cooling‑off period will not invalidate your unconditional right of withdrawal. In accordance with EU regulations, where excessive use causes depreciation of product value, a deduction corresponding to the actual loss may be made from your refund. Such deduction shall never exceed the original purchase price of the product.
Voucher Policy: Redeemed coupons cannot be reinstated or re‑issued after returns or exchanges if they have expired or been fully utilised. This clause complies with EU fair‑consumer standards.
Mandatory RMA Requirement: All returns must apply for an official RMA number by email in advance. We reserve the right to refuse acceptance and processing for parcels returned without pre‑approved RMA. All associated shipping risks and costs shall be borne solely by you.
Policy Revision: We reserve the right to update and revise this policy in accordance with EU legislation. Revised versions will be published on this page and take effect immediately upon publication.
Priority of Consumer Rights: Your statutory 14‑day unconditional right of withdrawal and entitlement to free returns or exchanges for defective products shall prevail over all general clauses herein. No provision of this policy may override mandatory EU consumer‑protection legislation.
If you wish to exercise your statutory right of withdrawal and submit a return or exchange request, please contact customer service by email at info@crawltin.com.
Once your application is approved, we will send you an official Return Merchandise Authorization (RMA) via email, together with complete return instructions and warehouse receiving information.
Please pack the goods properly as instructed and ship them back to our designated return warehouse in China using compliant international couriers. The full recipient address will be provided together with your RMA document.
After receiving and inspecting the returned goods, we will complete the refund or exchange process within 14 calendar days. Refunds will be issued to your original payment account.
Important Legal Reminder: Your statutory unconditional right of withdrawal under the 14‑day cooling‑off period shall not be restricted by any clauses below. The following general terms apply only to requests submitted after the cooling‑off period expires.
Full‑Coverage Return & Exchange Policy (Seller‑Liable Circumstances)
You are entitled to a free full refund or exchange, with all round‑trip shipping and replacement‑related fees borne by us, if any of the following seller‑liable situations occur:
- Our operational errors: wrong orders, incorrect items delivered, or missing accessories；
- Goods damaged or dented during transit, or abnormal cosmetic defects upon receipt;
- Functional malfunctions or other substantial non‑artificial quality issues of the products.
Within the statutory 14‑day cooling‑off period, if you submit a return request for personal reasons (change of mind, personal dissatisfaction, etc.), you shall bear the cost of shipping the goods back to our return warehouse in China.
Non‑Returnable & Non‑Exchangeable Situations (Permitted under EU Legislation)
For orders without valid quality defects once the statutory 14‑day cooling‑off period has expired, we reserve the right to reject return, exchange and compensation requests falling into any of the categories below:
- Requests submitted after the cooling‑off period expires without verifiable product quality issues;
- Goods with wear, scratches or stains beyond reasonable trial use that render the item unfit for normal resale;
- Product damage caused by improper use, incorrect operation, unauthorised modification or inadequate maintenance by the buyer;
- Requests submitted after cooling‑off‑period expiry merely due to wrong size or specification selected by yourself;
- Applications submitted after the cooling‑off period solely based on personal preference, dissatisfaction or change of mind;
- Partial returns or exchanges for bundled sets will not be accepted when the cooling‑off period has expired and no valid quality defect exists.
Precautions for Returns & Exchanges
Statutory reasonable‑inspection exception**: Unpacking and reasonable trial use to verify the properties, functions and specifications of goods within the 14‑day cooling‑off period will not invalidate your unconditional right of withdrawal. In accordance with EU regulations, where excessive use causes depreciation of product value, a deduction corresponding to the actual loss may be made from your refund. Such deduction shall never exceed the original purchase price of the product.
Voucher Policy: Redeemed coupons cannot be reinstated or re‑issued after returns or exchanges if they have expired or been fully utilised. This clause complies with EU fair‑consumer standards.
Mandatory RMA Requirement: All returns must apply for an official RMA number by email in advance. We reserve the right to refuse acceptance and processing for parcels returned without pre‑approved RMA. All associated shipping risks and costs shall be borne solely by you.
Policy Revision: We reserve the right to update and revise this policy in accordance with EU legislation. Revised versions will be published on this page and take effect immediately upon publication.
Priority of Consumer Rights: Your statutory 14‑day unconditional right of withdrawal and entitlement to free returns or exchanges for defective products shall prevail over all general clauses herein. No provision of this policy may override mandatory EU consumer‑protection legislation.
Countries Available for Delivery
Australia, Austria, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, United Kingdom, United States
We only accept orders from the countries specified above. For any incorrect orders placed from non-eligible regions, the full payment will be returned to your original payment channel within one business day.
Australia, Austria, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, United Kingdom, United States
We only accept orders from the countries specified above. For any incorrect orders placed from non-eligible regions, the full payment will be returned to your original payment channel within one business day.
Frequently Asked Questions
About Crawltin
CrawlTin isn’t just a parts supplier—it’s a workshop that breathes life into your RC crawler.
We’re obsessed with two things: building battle‑ready custom rigs and making articulated miniature drivers feel alive in the cockpit.
From high‑strength metal performance kits to hyper‑detailed, poseable figures, every screw and weathering scratch tells your off‑road story.
We believe the true soul isn’t in the speed—it’s in the sync between machine and figure: when your driver turns the wheel and the chassis articulates over rocks, that’s your world coming to life.
Whether you’re a first‑time builder or a seasoned scale enthusiast, CrawlTin is your one‑stop destination to craft a custom RC rig with character, emotion, and undeniable presence.
We’re obsessed with two things: building battle‑ready custom rigs and making articulated miniature drivers feel alive in the cockpit.
From high‑strength metal performance kits to hyper‑detailed, poseable figures, every screw and weathering scratch tells your off‑road story.
We believe the true soul isn’t in the speed—it’s in the sync between machine and figure: when your driver turns the wheel and the chassis articulates over rocks, that’s your world coming to life.
Whether you’re a first‑time builder or a seasoned scale enthusiast, CrawlTin is your one‑stop destination to craft a custom RC rig with character, emotion, and undeniable presence.
Personal Information & Payment Security
At CrawlTin, we take your privacy and payment security extremely seriously. We will never sell, trade, or share your personal information with any third parties for marketing or commercial purposes. Your private data is strictly protected and will only be shared when absolutely necessary to fulfill your order, such as providing shipping details to logistics carriers for delivery arrangement.
To ensure 100% secure checkout, we only use PayPal and other mainstream official payment gateways. All payment transactions are fully encrypted and processed through certified secure financial systems. Your funds and payment data are completely safe, allowing you to shop with total confidence at CrawlTin.
Do I need to pay customs duties and shipping fees?
At Crawltin, we firmly believe in transparent pricing. The amount you pay at checkout is the total cost you need to bear. Import duties, taxes, and international shipping fees for all orders are fully covered by us. Your package will be delivered directly to you—no additional payments required.