Great cells and really good price, I will definitely purchase again
Key Features
- 2800mAh nominal capacity optimized for high-current output
- Supports up to 35A maximum continuous discharge
- Stable lithium-ion chemistry for consistent performance
- Flat top, unprotected design for battery pack integration
- Engineered for long cycle life under demanding conditions
Overview
The Molicel P28A (INR-18650-P28A) is a high-performance 18650 lithium-ion cell designed for applications requiring sustained high current and reliability. With a 2800mAh capacity and a strong 35A continuous discharge rating, the P28A delivers efficient power output and dependable performance for professional-grade energy systems.
Applications / Uses
- High-current battery pack assemblies
- Power tools and industrial equipment
- Electric mobility systems
- High-output portable lighting
- Energy storage and backup solutions
SPECIFICATIONS
| Manufacturer | Molicel |
| Model | INR-18650-P28A |
| Size | 18650 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 2800mAh |
| Continuous Discharge Rating | 35A |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-Off Voltage | 2.5V |
| Protected | No (Unprotected) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.50mm × 65.15mm |
| Approx. Weight | 45.18g |
| Data Specification Sheet | Molicel P28A Datasheet |
⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Customer Reviews
Overall rating: 4.8 / 5 from 182 reviews.
First experience making battery packs with spot welder. My workmanship does not look the best, but these cells are awesome. Shipping was fast and secure.i was only gonna build a three cell, but was so impressed with there performance I had to build a four cell.
Used four of them in an old Porter Cable drill battery pack. Soldered wires onto ends of each battery. No issues. Pack has BMS card. Batteries worked as expected. Used one battery to replace three dead Ni-Cad 1.25 volt batteries in a B&D small hand held shrub trimmer. Again, soldered wires to battery ends vs spot welding. No issues.
Great price quick shipping will purchase again
Installed four of the ten in a Milwaukee M18 battery pack. Soldered connections vs spot welding. Didn't want to chance killing the BMS card with spike currents and voltages. Would rather risk harming the new batteries. Limited soldering iron heat to battery ends to 3 seconds.
I always buy Molicel batteries from 18650 Battery Store and never have any problems, they arrive in a timely manner and always with no damage or problems. There's some good people working at 18650 Battery Store, Much Love Yall!!💯🔥💜🤘💨💨💨
6s battery pack for my control line stunt plane. These work great!
Build 4S packs for my long range Rekon5 drone, great range for low weight compared to LiPo batteries and a great price!
Been using these batteries for years, will continue to do so. Also a great price!
Don’t really have anything bad to say, shipping was pretty quick, but the Batteries are great. Long lasting.
Works as it should. Not the best battery ever but better than what you get at the hardware store.
Seems to be a strong cell with less voltage sag than typical cells of similar capacity great experience with the order and product thank you 💯
aok
Love these batteries
It’s great
It�s great
Fast response, even during hurricane
The best battery that actually holds its charge. Gonna order some more.
Fast shipping, great batteries for my vape.
I was expecting two batteries. I can’t use it. I’m bummed because I have to pay double the shipping to order another one.
Great price.
I received exactly what was ordered, they work very well
Good batteries, just still expensive.
Quick shipping and very competitive pricing. Reputable company selling legit brands not fake re-wraped crap. Batteries always come in a new clear case. Huge plus! Very happy
This battery works really well. I love how long it lasts and how quickly it charges!
Really good fast i guess
Batteries and entire order was perfect! Thank you
Great batteries for my needs
Great product.
!
Incredibly long lasting power where my former batteries lasted only half as long.
Items as described and working ok. Fast shipping. Excellent price.
Just great power. Nuff said
works fine, no issues here
First time customer but definitely not last. Fast shipping and great prices. Thank you!!
wall worked great.
Everything good just as advertised
Good quality batteries, quick shipping, definitely would order again.
Great battery. Got these and hohmtech swt as well. These outperform the hohms with less mah but higher discharge rate. Somehow the charge seems to last longer for my use on these compared to the others.
Hi, the 18650 just worked so great with a lot of power on my power tools like impact gun, drill, saw and the ratchet, I like the way it performs on my power tools, definitely ill by it again special that brand. Thank you