BATTERYINT 36V 10.5Ah High-Capacity Upgrade Battery for RFN Warrior Kids SX-E500, SX-E700 R & SX-E800
- Regular price
- $179.50
- Regular price
-
$199.00 - Sale price
- $179.50
- Unit price
- per
Vendor : BATTERYINT
Product Type : Electric Dirt Bike Battery
Sku : BI-EDB-RFN50010S3P1835-XT60
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36V 10.5Ah High-Capacity Upgrade Battery for RFN Warrior Kids SX-E500, SX-E700 R & SX-E800
More ride time. Less charging. More dirt.
If your kid's SX-E500, SX-E700 R, or SX-E800 always runs out of battery before the day is done, this is the upgrade you've been waiting for. The BATTERYINT 36V 10.5Ah pack delivers 378Wh — a full 35% more runtime than the stock 7.5Ah battery — in the same physical footprint, so it drops right into the factory battery bay. No range anxiety, no rushing home to charge, just longer days on the track.
Key Features
- 35% MORE RUNTIME THAN STOCK — 10.5Ah / 378Wh vs the factory 7.5Ah pack. Two ride sessions per charge instead of one. Perfect for full days at the track or long trail rides.
- SAME DROP-IN FIT — Built to the exact same dimensions as the OEM pack. Slides straight into the SX-E500, SX-E700 R, and SX-E800 battery bay. No modifications, no extra mounting hardware.
- 10S3P PREMIUM 3500mAh CELLS — 30 high-energy-density 18650 cells (3500mAh each) in a 10S3P layout. Delivers consistent power even at 700W peak motor output, with no voltage sag on hills.
- BMS PROTECTION BUILT IN — Overcharge, over-discharge, over-current, short-circuit, and thermal protection. The extra capacity doesn't mean extra risk.
- XT60 HIGH-CURRENT CONNECTOR — Heavy-duty XT60 plug handles peak motor current cleanly and stays locked in on jumps and rough terrain.
- WORKS WITH YOUR EXISTING CHARGER — Charges through the stock 5.5mm DC port with your original 42V 2A charger. Full charge in about 5–6 hours (recommended to charge overnight).
- 90-DAY FREE REPLACEMENT WARRANTY — Buy with confidence. Email sales@batteryint.com if you want us to confirm fitment before ordering.
Specifications
| Spec | Value |
|---|---|
| Brand | Batteryint |
| Battery Type | Rechargeable Lithium-ion |
| Nominal Voltage | 36V |
| Full-Charge Voltage | 42V |
| Rated Capacity | 10.5Ah (10500mAh) |
| Energy Capacity | 378Wh |
| Cell Configuration | 10S3P |
| Cell Type | Grade-A 18650, 3500mAh (high-energy) |
| Discharge Connector | XT60 Female |
| Charging Port | DC 5.5mm |
| Recommended Charger | 42V 2A (OEM compatible) |
| Full Charge Time | ~5–6 hours |
| Dimensions | ~195 × 105 × 40 mm |
| Weight | ~2.3 kg |
| Condition | 100% Brand New |
| Warranty | 90-Day Free Replacement |
Compatibility
| ✅ Fits | Wheel | Age | Rider Height | Years |
|---|---|---|---|---|
| RFN Warrior Kids SX-E500 | 14" | 4–6 yrs | 110–130 cm | 2024–2026 |
| RFN Warrior Kids SX-E700 R | 14" | 4–6 yrs | 110–130 cm | 2024–2025 |
| RFN Warrior Kids SX-E800 | 16" | 6–9 yrs | 120–140 cm | 2025–2026 |
Does NOT fit: SX-E250 / SX-E400 (smaller battery bay), or any SX-E5 / SX-E8 / SX-E15 (different voltage platform).
Shipping & Returns
📦 Shipping
- Free standard shipping — order total qualifies
- Processing: 1–2 business days
- Delivery: 7–15 business days (US)
- Tracking emailed once shipped
↩️ Warranty & Returns
- DOA: free replacement within 7 days of delivery
- 90-day warranty against manufacturing defects
- Email sales@batteryint.com before returning any item
Can i cancel an order?
- Orders on batteryint.com can be cancelled before shipment.
- Please contact our customer service if you want to cancel your order,After we confirmed the shipping status,we will issue a refund(If we have shipped your order,it will be treated as returns).
- Please note:paypal fee will not refund as the paypal Policy for seller.
- If the battery you purchased is a customized product, cancellation unacceptable.
- If your battery arrives damaged or is not working, you can return it to us within 7 days after delivery or 30 days after shipment in case the delivery date is not traceable. You will receive an e-mail containing the shipment date and other details of your order after it has been shipped.
- Please include all of its accessories, like cables, chargers, batteries, in the returned parcel. If an accessory or component is missing, we will ask you to pay for it. All the return shipping fees will be covered by us.
- We will do our best to ensure that the products shipped to our customers are in their best condition. If your product turns out to be defective, please provide us with the following proofs:
- This clause does not include products of a category with specific warranty terms as well as damages caused by incorrect usage of a product.
- Photos of the front and the back of the package or box;
- Partial shipment slips (if applicable);
- Photo or video of the defective item;
- Photo or video and a detailed description of the problem;
- Upon being returned, the defective item will be refunded or replaced for free.
- Return shipping fee reimbursement is 30% of the item’s price up to a maximum of $30.
If the item you have received differs completely from the one you ordered, please do not hesitate to contact our customer service and to provide us with the following proofs:
- Photos or a video of the incorrect item;
- Photos or a video showing the problem occurred with this product;
- Because different batches of the products are supplied, the item logo or packaging you received may vary from the one displayed on our website. If all the functions and appearance of the product prove to be correct, please understand that this case will not be included in this policy. If a return is necessary, replacement plus shipping cost reimbursement will be issued to you once you send us a return shipping receipt showing how much you paid to return it. Please be sure that the incorrect item you return is in the original package and the merchandise is in the same condition you received it in. For the incorrect item, if you are able to find a use of it and prefer to keep it, you may suggest that to us and we will offer you a certain discount for buying it.
- If you are not satisfied with your purchase, you can return a product within 30 days after delivery to receive a replacement or a refund of its price minus the shipping fees. If the return is not a result of our error, customers will be required to cover shipping cost both ways.
- Please ensure to return the item with its original packaging and accessories in the same condition as when you received it.
If the products malfunctions (except for reasons caused by incorrect usage and accidental or intentional damage) within 90 days after shipment, you can return the product back to us. You should receive an e-mail with the shipment date and other details after your order has been shipped. Once we receive and approve the return,a full refund or replacement will be offered and a shipping cost reimbursement will be issued when you provide us with a receipt of the shipping charges you paid to send it back to us (the tracking number of the return package or a screenshot of the shipping receipt).
The return shipping fee should be less than 30% of the defective item(s) value, and also less than $30(USD). We will cover the actual postage (according to the receipt you provided). If the return shipping fee exceeds the limit above, please contact our customer service for further confirmation.
After 90 days and within 180 days from shipment
After receiving the defective item, we will forward it to our repair center. You will be charged the return shipping fees And Batteryint will charged the send-back shipping fee.
After 180 days from shipment
Batteries are consumables ,We will not accept a refund or a replacement after 180 days from shipment.
How can I return the defective item to Batteryint?
All customers should contact Batteryint Customer Service for approval before sending anything to us before returning any item(contact:sales@batteryint.com) . Batteryint will not be responsible for returned item(s) without notifying us in advance.
Notes:
- The returned products must be in a new and resolvable condition with original packaging, including cartons, parts, instruction manuals, etc.
- The buyer is responsible for the return postage, we will bear all the costs of sending replacement. For the sake of protection, we strongly recommend the buyer to insure the returned goods against loss or damage, and use a shipper who can provide proof of delivery.
- Any return must consult us first, do not accept return without RMA (provided by our customer service).
- Our refund policy only refunds the purchase price (excluding freight and handling charges or insurance).
- Please place a note inside the return package by including the following details(order number;product ID or name;quantity;a short description of the problem that occurred with this product)
- After mailing back the product, please send us the tracking number and a copy of the shipping receipt; if we can not receive this information, we will have to wait until when the product arrives in our warehouse.We have no responsibility to respond to items lost in the return process.
- After we receive your returned items, we must handle any exchange or issue refund.Refunds will be arranged to the same payment method you used to place this order. All the intermediary handling fees and bank processing fees will be at the customer's expense;
- Products beyond the warranty period are not included in the return, exchange and refund policies.
How long will you get your refund?
- If your return request have been confirmed and aprroved by our customer service,we will issue refund after received your returned parcel.
- Refunds will be arranged to the same payment method you used to place this order. All the intermediary handling fees and bank processing fees will be at the customer's expense;
- Normally it will take 3-7 working days to get your money back to your account.
Return packaging requirements
1.If the battery package is unopened, please return it in the original packaging of the battery.
2.If the battery has been taken out and used, please repack the battery for return.
3.Before sending the return package, you need to take a photo of the courier label on the package, which includes the recipient, sender and tracking number.
Packaging requirements are as follows:
- The outer packaging carton of the battery must be packed in a hard carton.
- Do not place any notes, reminders, or printed paper in the package.
- The battery should avoid direct contact between the positive and negative poles. Insulating materials such as plastic film can be used to separate the positive and negative poles, and metal objects that may cause battery short circuits should not be placed in the package.
- The battery needs to be properly fixed in the package to avoid damage due to collision and friction during transportation. For example, fix it with foam or cardboard slots.
For some special batteries, returns need to be packaged in accordance with relevant transportation regulations, such as using packaging materials with fireproof and explosion-proof properties.
Return Address:
Address: 4th Floor, No. 6, xiaoYiwei 6th Road, Dalang Town
City: Dongguan
Province: Guangdong
Country: China
Zip code: 523770
Name: Su xue shu
Phone: 0086-775-42197179
1. Why should I upgrade to the 10.5Ah battery instead of sticking with the stock 7.5Ah?
1. The stock 7.5Ah battery runs out after about one track session. This 10.5Ah high-capacity pack delivers 378Wh — roughly 35% more runtime — so your kid gets two full ride sessions per charge instead of rushing home to plug in.
2. Will the 10.5Ah battery physically fit in my RFN Warrior SX-E500 or SX-E700 R?
2. Yes. The 10.5Ah pack uses the exact same physical dimensions as the factory 7.5Ah battery. The extra capacity comes from higher-density 3500mAh cells, not a bigger case. It drops straight into the SX-E500, SX-E700 R, and SX-E800 battery bay.
3. How much longer can my kid ride with the 10.5Ah pack?
3. Expect about 35% more range than the stock battery. If the original pack gave your kid 60–90 minutes of trail riding, this one delivers roughly 85–120 minutes, depending on rider weight, terrain, and ride mode.
4. Do I need a faster charger for the bigger 10.5Ah battery?
4. No. It charges through the original 5.5mm DC port with your existing RFN 42V 2A charger. A full charge takes about 5–6 hours — most customers just plug it in overnight.
5. Will the extra weight affect the bike's handling or suspension?
5. The 10.5Ah pack weighs about 2.3 kg versus the stock ~2.0 kg, a difference of only 300g. The bike's suspension and chassis are designed to handle this weight range, so handling stays essentially the same.
6. Is the high-capacity 10.5Ah battery safe for a child's bike?
6. Yes. Every pack includes a built-in BMS that protects against overcharge, over-discharge, over-current, short circuits, and overheating. The larger capacity uses the same safety architecture as our standard pack.
7. Can I install this upgrade myself, or do I need a mechanic?
7. Installation takes under 2 minutes. Unplug the XT60 connector, lift out the old pack, drop in the new one, and reconnect. No tools, no wiring changes, no dealership visit.
8. Is this a genuine RFN OEM battery?
8. No. This is an aftermarket high-capacity upgrade manufactured by Batteryint to OEM specifications. It is not made by or affiliated with RFN/Apollo.
9. What if the 10.5Ah battery fails after a few months?
9. Every battery is backed by a 90-day free replacement warranty. If it arrives dead or develops a defect within 90 days of shipment, we replace it at no cost to you.
10. Which RFN Warrior models does this battery NOT fit?
10. This battery will not fit the SX-E250 or SX-E400 — those use a smaller 5.2Ah pack. It also does not fit the SX-E5, SX-E8, or SX-E15, which run on different voltage platforms (48V, 60V, and 74V).