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Eleaf IStick Pico E-Cig: Safety of Using 2200mAh Power Bank 18650 Batteries & Charging Methods

mikerpl 11238 15
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  • #1 17050795
    mikerpl
    Level 10  
    Hello.
    I have recently been using the Eleaf IStick Pico e-cigarette. I bought the recommended Sony VTC-5 18650 link for it. Recently I realized that such links are also in power banks. I took apart my 2200 mAh power bank, pulled out the batteries and put them in the e-cigarette. The battery has been detected, everything works ok. Can I use it as safely as a backup battery? Can I charge it with an e-cigarette? Is it better to charge these batteries using the powerbank system?
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  • #2 17050806
    mikerpl
    Level 10  
    And how better to charge? Make a charger from this system with a power bank? It will be safe for my batteries. ? Because the prices of recommended chargers start from 120 PLN: /
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  • Helpful post
    #3 17050817
    mariuszp19
    Level 35  
    You can easily charge with an e-cigarette.
  • #4 17050830
    Radiokiller
    Level 30  
    Don't worry about the links.
    Free laptop batteries can be obtained from computer services, I have tried several and it has never been a problem. The technicians are utilizing it anyway.
  • #5 17050846
    Freddy
    Level 43  
    Advice is not good, it is harmful.
    E-cigarettes take very high currents and not every link is suitable for this!
  • #6 17050861
    Radiokiller
    Level 30  
    Yes, all of them are not suitable, but as a source of acquiring links, they are websites.
  • #7 17050865
    Freddy
    Level 43  
    Radiokiller wrote:
    Yes, all of them are not suitable, but as a source of acquiring links, they are websites.
    On the contrary, the links from laptops are not high current and with this application they can cause a lot of damage.
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  • #8 17050876
    Radiokiller
    Level 30  
    I only use recycled cells for various extreme applications.
  • #9 17050877
    mikerpl
    Level 10  
    I'm using a 0.3 ohma heater. Maximum power: 75W, power I use: 17.5 W. In the case of these links, they are only threatened with their faster destruction or some more serious matters like an explosion?
  • Helpful post
    #10 17050893
    Freddy
    Level 43  
    mikerpl wrote:
    In the case of these links, they are only threatened with their faster destruction or some more serious matters like an explosion?
    May also explode. The maximum current from such a cell is 2C - i.e. with a 2200mA cell it is 4.4A.
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  • #11 17050917
    Radiokiller
    Level 30  
    I will write like this: I have already beaten some of these links. Some were squeaking, some were hissing but if something exploded I would not meet.
    However, listen to the advice of Freddy's colleague, you can never be too careful.
  • #12 19036404
    Lebdzio
    Level 5  
    Hello, regarding the topic, I have the same problem, we have used up e-cigarette batteries on the Internet, I found that some of the powerbanks are suitable for me, such as in the picture, tell me if I can use them safely? Eleaf IStick Pico E-Cig: Safety of Using 2200mAh Power Bank 18650 Batteries & Charging Methods
  • #13 19036432
    zjo
    Level 28  
    Hello. I have a double-heater tank, power supply max 80W, set 35, resistance of the heaters around 0.3 ohms, unfortunately batteries from damaged laptop cells cannot cope. I buy with stock, LGABHG21865 cells, a continuous discharge current, if I remember correctly over 20A, they calmly envelop ... The main question is what current the heater requires. Cells should have some reserve of current efficiency for safety, exploitation at the border or crossing it may be dangerous.
  • #14 19036711
    krzysiek_krm
    Level 40  
    zjo wrote:
    set to 35, the resistance of the heaters around 0.3 ohms

    It is probably necessary to assume the relationship P = I ^ 2 * R, the current will come out about 11 A.
  • #15 19036823
    zjo
    Level 28  
    It is correct. The cells taken from the laptop batteries did not work well with the wife's Joyetech Exceed, the heater has 1.2 ohm and the power supply is set to 15W, i.e. about 3.5A.
  • #16 20003252
    Aegisx
    Level 1  
    Hello, I will say that I am currently using the Aegis x with Zeus with the maximum power of the equipment is 200W, I use 80W. I have four Sony VTC 5 batteries when they discharge me, I use purple batteries from the powerbank Trusta. I do not see any difference in the operation of the equipment and it also keeps the batteries for a very long time, they have 2200 mAh each, Aegis shows that during such smoking it takes some 22 AMP. I wonder if it's safe?
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Topic summary

✨ The discussion revolves around the safety and compatibility of using 2200mAh power bank 18650 batteries in the Eleaf IStick Pico e-cigarette. Users express concerns about the suitability of these batteries, particularly those sourced from power banks, for high-drain applications like e-cigarettes. While some participants suggest that charging with an e-cigarette is feasible, others warn against using batteries not designed for high current discharge, as they may pose risks such as overheating or explosion. Recommendations include using batteries with sufficient discharge ratings, like the Sony VTC-5, and ensuring that any recycled cells are capable of handling the required current without compromising safety.
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FAQ

TL;DR: Power‑bank 2200 mAh 18650s are often 2C cells (~4.4 A); "May also explode" if overloaded. For Pico‑class mods, avoid reclaimed cells; choose high‑drain batteries matched to your wattage and current needs. [Elektroda, Freddy, post #17050893]

Why it matters: Picking under‑spec cells for vaping can overheat, vent, or fail; this FAQ helps Pico users choose safe 18650s and charging.

Quick Facts

Can I safely use 2200 mAh power‑bank 18650 cells in my Eleaf iStick Pico?

Not recommended. Many power‑bank 2200 mAh cells are low‑drain 2C, about 4.4 A continuous. Vaping setups often exceed that. Overstressing cells can overheat, vent, or worse. “May also explode.” Use high‑drain cells sized to your wattage instead. [Elektroda, Freddy, post #17050893]

How many amps does 35 W at 0.3 Ω draw?

Use P = I²·R. Solve I ≈ √(P/R). At 35 W and 0.3 Ω, current is about 10.8–11 A. “Assume P = I²·R.” Choose a cell with continuous rating above that, with a safety margin. [Elektroda, krzysiek_krm, post #19036711]

Will 2200 mAh cells handle 17.5 W on a 0.3 Ω coil?

No. Typical 2200 mAh power‑bank cells are about 2C, or ~4.4 A continuous. Even modest vaping often exceeds 4 A. That stresses these cells and raises failure risk. Choose a high‑drain 18650 with ample continuous current. [Elektroda, Freddy, post #17050893]

Are reclaimed laptop 18650s okay for vaping?

Avoid them. “E‑cigarettes take very high currents and not every link is suitable for this!” Reclaimed laptop cells are usually low‑drain. They can sag, overheat, or fail in vaping use. Select known high‑drain models instead. [Elektroda, Freddy, post #17050846]

Do low‑drain cells work for 15 W MTL vaping?

Often poorly. At 15 W and 1.2 Ω, current is ~3.5 A. A user reported laptop‑sourced cells “did not work well” in a Joyetech Exceed. Even modest power can expose low‑drain limits. Use higher‑drain 18650s for reliability. [Elektroda, zjo, post #19036823]

Which 18650s are better for sub‑ohm tanks?

Use high‑drain cells with >20 A continuous capability. One user reports LGABHG21865 cells, rated over 20 A, “calmly” handle ~0.3 Ω at 35 W. Keep a safety margin between your draw and the cell’s rating. [Elektroda, zjo, post #19036432]

Is charging the 18650 inside the mod via USB okay?

Yes on many devices. “You can easily charge with an e‑cigarette.” Use the mod’s USB port as intended by the manufacturer. If unsure, follow the mod’s manual guidance. [Elektroda, mariuszp19, post #17050817]

Should I build a charger from a power‑bank board?

No. Power‑bank boards target pack charging and output regulation. Lithium‑ion cells need a proper CC/CV charger with precise 4.2 V cut‑off. Use the mod’s USB charging or a dedicated Li‑ion charger designed for 18650s. “BU‑409: Charging Lithium‑ion”

How much current can 80 W vaping pull?

At 80 W, a user’s Aegis X showed about 22 A draw. That is a very high current for a single 18650. Such demand requires true high‑drain cells. Low‑drain power‑bank cells are unsuitable at these levels. [Elektroda, Aegisx, post #20003252]

What are warning signs an 18650 is failing?

Stop using any cell that hisses, squeaks, or emits odor. One user noted squeaking and hissing before issues. Treat any noise, swelling, or unusual heat as a red flag. Isolate and recycle the cell appropriately. [Elektroda, Radiokiller, post #17050917]

Are power‑bank/laptop 18650s safe as backup batteries for mods?

No. They are typically not high‑current cells. “With this application they can cause a lot of damage.” Reserve such cells for low‑drain electronics. Use only appropriate high‑drain cells in vaping devices. [Elektroda, Freddy, post #17050865]

How do I check if my battery is strong enough for my wattage?

  1. Note your power setting (W) and coil resistance (Ω).
  2. Estimate current: I ≈ √(P/R) using P = I²·R.
  3. Pick a cell whose continuous rating comfortably exceeds that current. Example: 35 W and 0.3 Ω ≈ 11 A. [Elektroda, krzysiek_krm, post #19036711]

Do I need an expensive (≈120 PLN) external charger?

Not strictly. You can charge in‑mod if supported. Some users note recommended chargers start around 120 PLN. Decide based on features you want versus budget. External chargers can add convenience and cell metering. [Elektroda, mikerpl, post #17050806]

I see no difference using power‑bank cells; is it still risky?

Yes. Many 2200 mAh cells are ~2C, only ~4.4 A continuous. Vaping can silently exceed that limit. “May also explode” under stress. Use high‑drain cells even if performance seems fine today. [Elektroda, Freddy, post #17050893]
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