(9) Battery Basics for Mods: IMR or Protected?
by, 08-27-2013 at 02:20 PM (8432 Views)
As mod users, we depend heavily upon batteries. To assist novices to choose which battery to use in their mod I have written this guide. Our choices are IMR, protected ICR Li-Ion, and a new class of Hybrid batteries.
High quality IMRs are currently recommended in place of Protected Li Ion for all applications. (reference - Rechargeable Batteries)
IMR (Li Mn) batteries are the safest batteries available to us for vaping. They use safer chemistry, so they don't require protective circuits like ICRs do. They have higher tolerence to stress, and although they may vent during failure it is less likely to be as dramatic as a ICR. Should protective circuits fail in ICRs they can vent violently in flames.
- High Quality, Brand Name Batteries. Batteries are not created equal. Mod battery experts recommend the following brand name IMR and hybrid batteries:
18650 2000mah 10Amp CDR
18650 1600mah 24A
18490 (1100mah) 16.5A
18350 (700mah) 6A
18650 1500mah 20A
Panasonic or Orbtronic hybrid
CGR18650CH (IMR/hybrid) 2250mAh 10A
NCR18650PF (LiNiCOMnO2) INR/ICR/IMR Hybrid 2900mAh 10A
NCR18650PD (LiNiCoAl) 2900mAh 10A
Orbtronic 18650 SX22 (hybrid) 2000mAh 22A
Orbtronic 18650 SX30 (hybrid) 2100mAh 30A
UR18650EX 2000mAh 20A
Samsung hybrid (LiNiCoMnP)
INR18650-22P 2200mAh 10A
INR18650-20R 2000mah 22A
us18650v3 IMR 2250mAh 10A
us18650vct3 1600mAh 30A
us18650vtc4 2100 mAh 30A
18650 2000 mAh 16A
18650 1500 mAh 22A
18500 1100 mAh 8.8A
18350 800 mAh 6.4A
18650 (IMR/hybrid) 2250mAh 10A
18650 2000mAh 10A
18650 1600mAh 30A
18490 1100mah 8.8A
18350 800mah 6.4A
If you do sub-ohm coils, you must use a battery which has over 10 amps CDR.
- Lower Quality Brand-Name Batteries. Trustfire, Ultrafire, and Surefire are a second-tier name brand battery in terms of quality and safety. Not recommended.
- Generic Batteries. Not recommended. Seen at Amazon & EBay at cheap prices or thrown in for free in a kit when you purchase a mod made in China. These are unknown batteries of unknown quality by an unknown manufacturer, and not worth the risk using in your mod. Never assume because they were included with your mod that they are safe or the correct battery to use.
- Be wary when shopping for batteries online. Unprotected ICR batteries should NEVER be used in a mod. I recommend buying only the batteries from the list above, paying attention to model numbers.
- If uncertain about the quality or type of a battery, don't buy or use it. Do not use over-the-counter batteries like those from Radio Shack, etc. Buy only from trusted e-cig vendors. Many use RTD Vapor AW Batteries. Use the type of battery that your mod calls for. For example, Provape recommends using only AW IMR button top batteries in the Provari; using magnets on flat top batteries will void the warranty because this is an unsafe battery practice.
- Battery Chargers. Get the best charger that you can reasonably afford. Statistically most battery incidents occur during the charging phase on a charger. Pila, Xtar, and Nitecore Intellicharger are the highest recommended brands.
- Always use safe battery practices and common sense with all batteries. Even the safest battery available to us can fail. IMR battery failure From what I've read, most battery failures are the result of rapid discharge, either from the fire button inadvertantly being pushed for too long, or the battery being shorted from metal objects (keys, change, etc) completing the circuit when carrying a battery in a pocket or purse. Use Battery Cases. Do not stack batteries.
- If you are using sub-ohm coils in an RBA/RDA, it is extremely important to use the highest quality IMR battery. Coils < 0.8 ohm require an IMR battery that has a maximum continuous discharge rate over 10 amps. This is extremely critical. OHM'S LAW CALCULATOR
PROTECTED or IMR BATTERY: Which is best for your application?
IMR Li Mn. Lithium manganese class batteries. Also called "high drain", "safe chemistry", "unprotected".
- These are used in regulated mods that use buck boost circuitry to achieve variable voltage-wattage, but they are now also recommended for single voltage mechanical mods as a safer alternative to protected Li Ion batteries. Technical - Why High Drain Batteries?
- This class will have less capacity in mAh rating compared to protected batteries, but are superior when maximum load current is required, such as in regulated mods, mechanical mods using a Kick, or using an RBA.
- New mixed chemistry batteries that are both safer chemistry/high drain and extended capacity in one.
- A good choice for applications that demand both maximum load current and longer battery time. Can be used for either mechanical or regulated mods.
Protected ICR Li Ion. Lithium ion class batteries, also called "protected batteries".
- These batteries use a built-in protective circuit because they contain volatile chemistry that can become unstable quickly when they are severely stressed. Circuit failure can lead to battery failure, venting violently with flame in an event called thermal runaway. These batteries have a higher capacity (mAh rating) than IMR batteries and have been used in single voltage applications in a mechanical mod when long battery time was the primary objective. Not recommended for regulated mods, RBAs, or use in a mechanical using a Kick.
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Protected batteries vs IMR - safety
What does IMR mean
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Battery Data | Deus Ex Vaporis
What does a battery's C Rating mean?