An example of a proper pulse rating would be 30 amps for 2 seconds. Without stating time, pulse lacks meaning. Remember: a pulse is defined as current over time. Some people seek pulse ratings, which are often fabricated. Note that this is the cell's maximum continuous discharge rating. Most people do not want to go below 2.5V for safety concerns, and if they do the low voltage environment does not provide ideal performance. (We see a similar parallel between the LG HE2 and HE4 fast discharge conditions). This 0.5V difference translates to a higher milliamp hour rating, but at expense of utility. Cells are to rest 10 minutes after charge and 30 minutes after discharge.Ģ.0V is considered the lowest possible safe cut-off voltage for discharging any 18650 cell. Cells shall be discharged at constant current of 10000mA and 20000mA to 2.0V. discharge values are as follows:Ĭells shall be charged at constant current of 4000mA to 4.2V with end current of 100mA. LG Chem’s testing conditions for rating Fast and Max. What is important to note is the cut-off voltage of 2.0V. The Fast discharge has been tested at both 10A and 20A. discharge testing conditions, nor did they take into account fast discharging conditions outlined by LG Chem in the spec sheet (see next section). This has likely led to the claims that the HG2 under performs. However many of these tests neither distinguished between the standard discharge vs. continuous discharge rating the capacity will be slightly reduced (watt hours more so). ![]() The nominal capacity of the HG2 is determined while discharging at these values. These are normal standard discharge values. However keep in mind that fast charging will decrease the cycle life of the HG2. (3.7V 18650 batteries are older, a standard of measurement was changed but actual voltage remains the same.)Ī 4A fast charge is also good. This is the standard voltage for all 18650 batteries. If you are interested in maximizing both amperage and capacity you should consider this cell because it doesn't get better at the moment. My comments on the HG2 specification sheet:ģ,000 milliamp hours is the highest capacity ever for a true high-drain (20A+) cell. Determine whether the HG2 deserves a noble title.Take a look at the HG2 specification sheet.To test that claim, I'll do the standard Battery Bro review: It's for that reason I am not crowning the HG2 as the new king on specs alone. That can be due to a number of reasons including a quick upgraded release, unforeseen safety problems, supply chain insecurity, market ignorance, and so forth. That said, there are many cases where the newest 18650 battery with the latest specs never gains mass adoption. That means, taking into account the battery specs and LG Chem's release schedule, the LG HG2 will likely be a good contender for one of the best 18650 batteries for some months to come for high-drain applications. An average of between 6% and 10% increase in battery performance is expected, compounding yearly. LG Chem is on a rolling schedule of releases and research, all planned years in advance. The LG HG2 can be seen as a 500mAh capacity upgrade from its predecessors the HE2/HE4 which also have a 20A discharge limit. A battery that can both be high-drain, and high-capacity is just what everyone wants. A 20 amp, 3000 mAh milestone is, in some way a holy grail of stats. While the original release of the LG HG2 was in 2014, production has become available in Summer 2015. All of our staffs and facilities have been ready to take care of your needs.Should you have any interest in our products, Contact us today.This is LG's new brown battery - the LG HG2 Overview Our monthly capacity is up to more than 50, 000 units, and delivery usually only takes 15-25 days. Drawing and sample will be sent within just 2-5days.Relying on location in DongGuan city, the most powerful Chinese electronics industry city, our production capability is also high and efficient we have our own design team, production line. Thus we develop a fast sample services mechanism (FSS). We well understand efficiency is definitely the base of a successful business. The products always hold a good name by its fashionable appearance, excellent design, reliable quality and hot sale all over the world. ![]() The main products are Modified Sine Wave Inverter, Pure Sine Wave Inverter, Lead-Acid Battery Charger, Solar Charge Controller, OEM-Product, etc.Our products have passed the RoHS and CE certificate. is a modern enterprise with design, production, and sales as a whole.
0 Comments
![]() Heavy metals have an important place among these pollutants and constitute one of the most dangerous types of pollutants. Today, with the increasing population, industrialization and technological developments, various pollutants reach aquatic environments and environmental pollution is increasing day by day. The most common examples of this type of pollution are heavy metal ions such as Hg from mining activities, some nitrogen compounds used in agriculture, chlorinated organic molecules from sewage or water treatment plants, and acids formed as a result of various production activities 2. The biggest cause of water pollution is chemicals discharged into natural water bodies as a result of human activities. ![]() Common consequences of water pollution on ecosystems include the death of species, loss of biodiversity and loss of ecosystem services. While the protection of freshwater resources is so essential for humanity, the pollution of natural water bodies by pathogenic microorganisms, radioactive substances, industrial and domestic wastes, organic and inorganic substances as a result of various activities negatively affects water quality. Despite this vital importance, the world's freshwater ecosystems constitute only 0.5% of the earth's surface, and within this percentile, the river constitutes 0.01% and is of great importance 1. Surface and underground water resources are vital in areas such as agriculture, hydropower, animal husbandry, industrial activities, forestry, fisheries, maritime and recreation. It is also one of the best manageable natural resources due to its ability to divert, transport, store and recycle. Water is one of the most important renewable resources for sustainable agricultural production, economic development and general well-being. As a result, heavy metals detected in the water samples of Pazarsuyu stream caused multiple toxicities in the bio-indicator plant, and lycopene reduced this toxicity and recorded a protective role.Ĭlimate change and rapid industrialization cause reduction and pollution in water resources. Lycopene application showed a protective role by providing an increase in germination parameters and MI, decrease in MN and CAs frequencies, and improvements in MDA, SOD and CAT activities. Simultaneous application of lycopene with stream water reduced the effects of heavy metals and resulted in a dose-dependent improvement in all parameters studied. cepa root tip cells were associated with the presence of heavy metals in the water samples. Stream water application promoted anatomical damages such as epidermis and cortex cell damage, accumulation of some substances in cortex cells, flattened cell nucleus and non-apparent appearance of conduction tissue in root tip meristem cells. CA observed with high frequency was also confirmed by DNA fragmentation determined by the Comet test. In addition, MN and CAs frequencies, indicating the genotoxic effects, were increased and significant abnormalities were detected in MDA, SOD and CAT levels, which indicate the deterioration of antioxidant/oxidant balance. Germination percentage, root length and weight gain of the group treated with Pazarsuyu water samples were decreased 50%, 73% and 68%, respectively compared to control. ![]() As a result, germination-related parameters and meristematic cell proliferation of bulbs germinated with Pazarsuyu water samples decreased significantly. ![]() Heavy metals pollution was analyzed with ICP-MS and Fe > Sr > Ba > Be > Mo > Li were determined according to the rate of presence in the water samples of Pazarsuyu. bulbs were divided into six groups and germinated for 72 h with 215 mg/L and 430 mg/L doses of lycopene, tap water and stream water. Germination percentage, root length and weight gain as physiological markers of toxicity mitotic index (MI), micronucleus (MN) and chromosomal aberrations (CAs) as genetic markers of toxicity malondialdehyde (MDA) level, superoxide dismutase (SOD) and catalase (CAT) activities as biochemical markers of toxicity, and meristematic cell damages were used as anatomical markers. In this study, heavy metal pollution in the Pazarsuyu stream of Giresun province and the protective role of lycopene against the toxicity caused by this pollution were investigated using the Allium test. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |