国产高清在线精品二区-国产三级韩国三级日产三级-久久国产精品久久久久久-国产丝袜美女-亚洲国产精品无码7777一线

FAQ
You are here:Home >> News >> FAQ
Understand the three most critical parameters of lithium batteries
216 2025-03-25
"Voltage/capacity/energy density: Understand the three most critical parameters of lithium batteries, you can really understand the battery performance!"
First:Voltage: the "blood pressure" of the battery, which determines the limit of energy output
【 Core Concepts 】
Voltage: The potential difference generated by the movement of unit charge inside the battery, which directly affects the power supply ability of the device
Nominal voltage: the voltage when the battery is working normally (such as 3.7V lithium)
Discharge cutoff voltage: The lowest voltage at which a battery can be safely discharged (usually 2.5-3.0V)
【 Fatal mistake 】
Higher voltage = higher energy?
→ Wrong! Voltage only reflects the intensity of a single discharge, actual energy = voltage x capacity (Wh)
→ Comparison: 5V/2000mAh=10Wh VS 3.7V/5000mAh=18.5Wh
[Real case] A brand of drone crash in 2019:
→ The nominal voltage of the battery is nominal to 4.2V (standard 3.7V), and continuous discharge causes the electrolyte to boil and explode
Second, capacity: the "meal" of the battery determines the nature of the battery life
【 Core formula 】
Capacity (mAh) = Discharge current (mA) × time (h)
【 In-depth analysis 】
Capacity test standard: 0.5C discharge: discharge at half of the rated capacity to the cut-off voltage (such as 500mA discharge for 1000mAh batteries)
Low temperature capacity attenuation: lithium iron phosphate capacity decreases by 40% at -20℃, while ternary lithium only decreases by 15%
"Dummy label" trap
A treasure burst charging treasure measured:
→ Nominal 20000mAh, actual 0.5C discharge only 6300mAh (nominal rate 63%)
→ Key metrics: See if marked "mAh@2A" or "20W output"
Capacity and life game
Deep charge and deep discharge vs Shallow charge and shallow discharge:
→ Comparison of capacity retention rate after 100 full charge and discharge cycles:
Depth charge and discharge: 65%
20%-80% range charge and discharge: 92%
Third, energy density: the "weight loss champion" of the battery, which determines the portability of the device
【 Core formula 】
Energy density (Wh/kg) = Voltage (V) × capacity (Ah)/mass (kg)

Fourth, consumers must see the parameter selection guide
Mobile phone/tablet: 4000mAh +3.8V + voltage is preferred
Be vigilant below 20000mAh +3.2V (mostly low-end cells)
Electric bicycle: pay attention to the energy density above 60Wh/kg (the new national standard requirements ≥50Wh/kg)
Select 18650 cells
Power bank: Calculate the actual energy: capacity (mAh)× voltage (V)/1000 → 20000mAh/3.7V=74Wh
2023 civil aviation restrictions: ≤100Wh can be directly boarded, 100-160Wh requires the approval of the airline
Voltage is the "vital sign" of lithium batteries, capacity is the "meal amount", and energy density is the "body type". By understanding these three parameters, you can see through the hype and make smarter choices. When solid-state batteries break through the energy density bottleneck, perhaps we will witness a real energy revolution - after all, who can master the balance of these three parameters, who will hold the lifeblood of the technology industry in the next decade.
主站蜘蛛池模板: 色婷婷五月在线精品视频| 亚洲中文字幕精品久久| 性欧美videofree高清极品| 亚洲美女高清无水av| av片亚洲国产男人的天堂| 国产精品久久久久久久9999| 视频在线+欧美十亚洲曰本| 美女久久| 九九九精品成人免费视频小说| 蜜臀av无码人妻精品| 最大胆裸体人体牲交免费| 精品人妻大屁股白浆无码| 亚洲成年轻人电影网站www| 亚洲精品久久久久久一区| 97精品人人a片免费看| 亚洲一区二区三区小说| 无码免费伦费影视在线观看 | 中文字幕无码家庭乱欲| 人人妻人人妻人人片av| 国产成人国产在线观看| 亚洲国产天堂久久综合| 国产成人av在线免播放观看| 亚洲欧美激情四射在线日| 亚洲一区av无码专区在线观看| 51久久夜色精品国产水果派解说| 亚洲人成网站18禁止人| 亚洲日韩一区精品射精| 又污又爽又黄的网站| 国产又粗又黄又爽的大片| 国产成人综合色就色综合| 国产一区| 少妇的丰满人妻hd高清| 十八禁免费观看| 亚洲精品久久久久久av | 亚洲伊人久久精品酒店| 无码av中文一区二区三区桃花岛 | 国产精品无码无卡在线播放| 中文无码人妻影音先锋| 成人欧美一区二区三区黑人| 97精品国产久热在线观看| 情欲少妇人妻100篇|