{"product_id":"samsung-21700-48g","title":"Samsung 21700 48G","description":"\u003cp\u003eMOOCH ARTICLE ON BATTERY.\u003c\/p\u003e\n\u003cp\u003eWhile the test results are hard data, the conclusions and recommendations I make based on these tests are only my personal opinion based on my criteria for setting a rating. Carefully research any cell you are considering using before purchasing.\u003c\/p\u003e\n\u003cp\u003eTesting cells at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved and how to minimize them.\u003c\/p\u003e\n\u003cp\u003eIf the cell has only one current rating number on it, or if it only says \"max\" then I have to assume that the company is stating that the cell can be discharged at that current level in any way, including continuously.\u003c\/p\u003e\n\u003cp\u003eBottom Line\u003cbr\u003e This is a 21700 cell. It is about 21mm in diameter and 70mm long.\u003c\/p\u003e\n\u003cp\u003eThis cell performs about as well as the 15A 4000mAh Sanyo NCR20700B down to 3.2V. While the internal resistance of this Samsung is a bit higher than the Sanyo, causing a bit more voltage sag, the higher capacity of this Samsung helps compensate for that.\u003c\/p\u003e\n\u003cp\u003eThe datasheets mention that the 9.6A continuous current rating given to this cell would result in reduced cycle life made me think it would probably end up being a 7A-8A cell in my testing. Especially considering that Samsung used 4.8A for their cycle life testing. But, I was wrong. Samsung does underrate their cells and this one has a 500 cycle rating at 4.8A. Even with the accelerated aging caused by using it as a 10A battery, versus as a 4.8A battery, the cycle life would only be reduced down to the level where the other batteries we use are rated, about 200 cycles. This is why I am still rating it at 10A.\u003c\/p\u003e\n\u003cp\u003eThis cell ran quite cool when discharged its continuous rating. Its limited more by its own higher internal resistance, causing greater voltage sag, than by high temperatures when run too hard.\u003c\/p\u003e\n\u003cp\u003eThis bottom of this cell is unique, being recessed and scored unlike any other cell I‰۪ve tested. It almost seems like the bottom is designed to split open, i.e., vent, if there is an over pressure situation. But there is no mention of this in the datasheet so assume I am wrong for now. If stacking these cells in a mod you will need a magnet between them to allow them to make reliable contact.\u003c\/p\u003e\n\u003cp\u003eBoth of the cell's I tested were 70.3mm long and were an uncomfortably tight fit in LUC V4 chargers. I do not know which others chargers they may or may not fit in.\u003c\/p\u003e\n\u003cp\u003eThe model number and batch\/date code printing are on both the wrap and the metal can of the cell.\u003c\/p\u003e\n\u003cp\u003eI am rating this Samsung cell at 10A and 4800mAh. Its maximum vaping amps (MVA) limit is 15A, limited by voltage sag. It would be an okay choice for vaping at up to about 65W per cell but under 40W-50W would be better.\u003c\/p\u003e\n\u003cp\u003eThe two cells that were tested were purchased for that purpose by me.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv\u003eThe user must have appropriate understanding of lithium ion batteries before purchase. Use caution when working with and using lithium ion batteries as they are very sensitive to charging characteristics and may explode, burn, or cause a fire if misused or mishandled. Always charge in or on a fire-proof surface. Never leave batteries charging unattended. Buyer is responsible for any damage or injury caused by misuse or mishandling lithium ion batteries and chargers. No express or implied guarantee of compatibility with any device can be made. Charge only with a smart charger designed for this specific type of lithium ion battery. Do not mix and match old and new, used and unused batteries.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMisusing or mishandling lithium ion batteries can pose a SERIOUS RISK of personal injury, property damage, or death\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eBATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED\u003c\/li\u003e\n\u003cli\u003eONLY use with proper protection circuitry\u003c\/li\u003e\n\u003cli\u003eONLY use within manufacturer specification\u003c\/li\u003e\n\u003cli\u003eDO NOT store loose in pocket, purse, etc. – always use a protective case\u003c\/li\u003e\n\u003cli\u003eKEEP AWAY from metal objects to prevent short circuiting\u003c\/li\u003e\n\u003cli\u003eDO NOT short circuit\u003c\/li\u003e\n\u003cli\u003eDO NOT use if wrapper or insulator is damaged or torn\u003c\/li\u003e\n\u003cli\u003eDO NOT use if damaged in any way\u003c\/li\u003e\n\u003cli\u003eDO NOT overcharge or over-discharge\u003c\/li\u003e\n\u003cli\u003eDO NOT modify, disassemble, puncture, cut, crush, or incinerate\u003c\/li\u003e\n\u003cli\u003eDO NOT expose to liquids or high temperatures\u003c\/li\u003e\n\u003cli\u003eDO NOT solder\u003c\/li\u003e\n\u003cli\u003eUser must be familiar with handling lithium ion batteries before purchase\u003c\/li\u003e\n\u003cli\u003eUsage of batteries is AT YOUR OWN RISK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eLocal regulations and laws pertaining to the recycling and disposal of lithium ion batteries vary so please consult your local jurisdiction regarding appropriate disposal. Many retail stores offer free recycling of rechargeable batteries.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Samsung","offers":[{"title":"Samsung 21700 48G","offer_id":10770568445994,"sku":"BA-SM-21-48","price":9.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2781\/6790\/products\/samsung-21700-48g-496214.jpg?v=1596299412","url":"https:\/\/www.wholesalevapor.com\/products\/samsung-21700-48g","provider":"WholesaleVapor.com","version":"1.0","type":"link"}