Vapcell M35A 18650 3500mAh 20A Battery

18650 Li-ion · 3500mAh capacity · 20A continuous discharge · 3.7V nominal · Blue wrap · Rechargeable · Compatible with most 18650 vape mods.

The Vapcell M35A is a high-capacity, high-drain 18650 Li-ion rechargeable battery delivering 3500mAh capacity with a 20A continuous discharge rating — a strong combination that suits regulated mods and sub-ohm vaping at higher wattages. Compatible with the vast majority of vape kits that require external 18650 batteries, the M35A offers all-day vaping performance in a standard flat-top 18650 format. Browse our full Batteries & Chargers range for all available cells and chargers.

What Is mAh and Why Does It Matter?

mAh stands for milliampere hour — the unit used to measure a battery's capacity. A higher mAh rating generally means longer battery life between charges. The Vapcell M35A's 3500mAh capacity is on the higher end for 18650 cells, making it a strong choice for frequent vapers who want to go longer between charges. Battery life also depends on the wattage the device is running at — higher wattages drain the battery faster regardless of capacity.

What Is CDR and Why Does the M35A's 20A Rating Matter?

CDR (Continuous Discharge Rating) is the maximum current a cell can safely deliver continuously. At 20A, the M35A has a higher CDR than many high-capacity 18650 cells — most 3500mAh cells are rated at 10–15A. This makes the M35A a versatile cell that suits both moderate and higher-wattage regulated mods without compromising safety margins. Never use a cell beyond its CDR rating.

How Does the M35A Compare to the Vapcell K30?

The Vapcell K30 offers 3000mAh at 15A CDR — a solid mid-range cell for moderate wattage use. The M35A steps up to 3500mAh and 20A CDR, making it the better choice for users who want more capacity and higher discharge headroom. For even higher capacity, see the ODBXT 3800mAh and Fogstar Energy 4000.

Why Stock Multiple 18650 Cell Options?

Different customers have different needs — some prioritise maximum capacity, others need a higher CDR for demanding builds, and some want the best value cell for their regulated mod. Stocking a range of 18650 cells across different capacity and CDR profiles ensures you can serve the full spectrum of vaping customers. Browse the full Batteries & Chargers range for all available options.

What is the capacity of the Vapcell M35A?

The Vapcell M35A has a capacity of 3500mAh — on the higher end for 18650 cells, providing excellent all-day battery life in regulated mods.

What is the continuous discharge rating?

The Vapcell M35A has a CDR of 20A — higher than many 3500mAh cells, making it suitable for regulated mods at higher wattages.

What vape mods is the M35A compatible with?

Compatible with most vape kits that require external 18650 batteries — including single and dual battery regulated box mods, tube mods, and sub-ohm devices.

How do I charge the M35A?

Charge via a dedicated external Li-ion battery charger or via the mod's built-in USB charging circuit. Always use a charger rated for Li-ion cells. Never leave charging batteries unattended.

How long will the M35A last before it needs replacing?

Replace every 2 years or when you notice a significant drop in capacity — whichever comes first. Never use a battery with a damaged or torn PVC wrap.

• Always use a battery charger rated for Li-ion cells
• Use a battery case to transport batteries safely — never carry loose in a pocket or bag
• Never leave a battery on charge unattended
• Keep batteries away from extreme heat, direct sunlight, and moisture
• Do not completely discharge Li-ion batteries — recharge before they reach 0%
• Never use a battery with a broken, torn, or damaged PVC wrap — rewrap or replace immediately
• Replace batteries every 2 years or when capacity noticeably degrades
• Do not short circuit, crush, puncture, or disassemble batteries
• Only use in regulated devices with appropriate protection circuits

⚠️ Important Safety Warning

18650 rechargeable Li-ion batteries can be dangerous if used improperly. Always use in regulated devices with appropriate protection circuits. Never use in mechanical or unregulated mods without thorough knowledge of battery safety. Do not short circuit, overcharge, over-discharge, crush, puncture, or expose to extreme heat. Never use a battery with a damaged wrap. The buyer assumes all associated risks.