Knowledge Base


Lithium Batteries have many exceptional benefits over regular NiCd and NiMh cells.
They are:

• Much lighter in weight
• Last longer
• Charge much faster
• Don’t have a memory effect
• Have very little voltage drop as they deplete

But they are NOT all the same. They pack a heap of power, and lots of power, when handled wrongly can cause lots of drama and damage. They can not be teated like the regular batteries you probably grew up with, so a little bit of time spent learning about them can give you the knowledge you need for peace of mind in purchasing, using and caring for your Li-ion cells.

This page is subject to frequent updates.


LG 18650 Specification Data Sheet: [.pdf]
The manufacturer’s 2014 Data Sheet on our preferred 18650 LGMJ1 3500mAh (Green) Lithium Cells – Nickel Chemistry (INR).
Download from us here.

Vapers Battery Safety Guide

  • A great easy-reading article with a ‘Too Long- Didn’t Read” summary at the bottom for skimmers.



ABOUT FIRE, OUTBACK HEAT, CELL PROTECTION, AND CHEMISTRYI appreciate caution when it comes to Lithium batteries as they should not be treated without due care and attention. As of Aug 2019, I have not heard of any problems or mishaps from those using quality lithium cells. It should be noted that trusted and respectable brands (LG, Panasonic, Sanyo and Samsung) have the highest safely and manufacturing standards.

* In regard to heat testing and limitations, I have included information from two Manufacturer’s Data Sheets that cover two different battery chemistries.
These are from LG – LG make the Green MJ1 3500mAh cells supplied in our kits.The FIRST data sheet from LG ( – refers to the NCR or more volatile Cobalt chemistry – wherever you find these cells they will be fitted with ‘overcharge and over-discharge Protection’ to reduce this volatility.I do not supply these cells as the ‘protection’ circuits are only active when in a device, and do not operate to improve safety in:1. Hot external environments,2. Physical impact/shock.Thus, I have chosen the more stable INR or Nickel chemistry for use with the SDC lithium battery kits. These are not fitted with protection circuits as, I believe, manufacturers deemed the risk of thermal failure while charging or discharging was insufficient. Nonetheless however, I have ensured the chargers supplied with the kits have automatic overcharge and over-discharge protection features built in to improve all-around safety and ease of use.The SECOND data sheet from LG ( refers specifically to the manufacturer’s specification sheet for the green 18650 LGMJ1 cells which I supply with the Fossicker and Prospector SDC lithium battery kits.On the basis that the chemistry for the LG-made MJ1 and the Samsung INR50E 21700 ‘JUMBO’ cells is the same, I believe it would be a reasonable assumption that the MJ1 test results could be applied as a general guideline for use with the JUMBO Samsung 21700 cells.GENERALLY SPEAKING, I believe these tests indicate:TEST * Storage tests were conducted with prolonged 60˚C for a period of of 1 week to measure changes in battery capacity and performance.RESULT – No fire or explosion.TEST * Fire/Explosion tests were conducted ay 125˚C for 10 minutes:RESULT – No fire or explosionTHUS * Risk of fire, venting or explosion may exist when exposed to 125˚C temperatures for greater than 10 minutes.

PROTECTED vs UNPROTECTED (also see above)