LG HG2 3000mAh (vs Samsung 25R 2500mAh)
Getting every ounce of energy from batteries is a challenge for most vapers. Our dream of an all-day vape is usually trumped by the limitation of our batteries.
I typically choose batteries that are the safest. My go-to battery has been the Samsung 25R 2500mAh. When Samsung released a new version of the 25R, it was the same capacity, but a slightly different chemical composition that offered slightly longer life and a higher charge cycle of up to 500 charges.
The Samsung 25R is a great all around battery with support for constant 20 amp and a maximum pulse of 100 amp.
At 2500 mAh, I typically get about 4.5 ml of juice vaped before needing a recharge (on a Vaporshark rDNA 40 at 460F).
LG has been in the battery business for some time. One of their recent batteries, also a 2500 mAh offering, looked reasonable for vapers, but was limited in constant amperage.
Always on the prowl for longer life from batteries, I decided to get a few of the LG HG2 3000 mAh batteries. After a fresh and full charge, I popped them into one in the Vaporshark. I was was expecting about a 20% gain in vaping time before needing a recharge, and got a bit more than that at the exact same settings as the Samsung battery. Total of about 7 ml of juice before needing a recharge.
LG does not publish the C rating of their batteries, so I did few calculations from their published specifications. The LG HG2 3000 mAh battery is rated at 20 amps continuous with a nominal voltage of 3.6. The published Watt Hours is 11.1.
Based on that, the AH (Amp Hours) is 3.083, and the C rating is 6.49.
That is roughly the same as the Samsung 25R 2500 mAh. 20 amps continuous, nominal voltage of 3.6, 9.09 Watt Hours, 2.525 AH, and a C rating of 7.92.
The C rating on both is not spectacular and indicates that it should be monitored when used with high wattage mods. That's a bit tricker than it sounds. There are several issues to watch out for, the main one being heat generation from the batteries when pushed to the limits. If you feel your mod heating up – and that's not easy to detect – switch devices for a while. Why isn't that easy to detect? With high wattage devices, your atomizer will heat up quickly (especially with temperature control) and the heat will dissipate through the mod as well. That can mask the heat generated by the batteries and in some cases, even contribute to the heat generation.
Although the specs indicate the extra 500 mAh should only equate to about a 20% increase in vaping time between recharges, my experience so far is that I am getting close to 45-50% more vaping time.
The Samsung 25R 2500 mAh costs an average of $9 each. The LG HG2 3000 mAh cost an average of $15 each. (We've seen them as low as $10).
I suspect the cost will come down a bit as the LG batteries get into more vape stores. It's definitely worth the switch to LG HG2 3000 mAh.
By the way, independent testers are rating the charge life cycle at between 300 and 500 charges. It is expected, as with all other batteries, that the mAh will drop by about 20% after about 200 charges.