nickel cadmium ni cd batteries

The principle of maintenance-free lead-acid batteries is based on the following aspects

Mar , 07 2025

1、Basic Electrochemical Principles The charging and discharging process of maintenance-free lead-acid batteries is based on electrochemical redox reactions. When discharging, metal lead is the negative pole, the oxidation reaction occurs, the electrode reaction formula is Pb +SO42-===PbSO4+ 2e-; lead dioxide is the positive pole, the reduction reaction occurs, the electrode reaction formula is PbO...

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Causes of harmonics in rectifier equipment

Mar , 21 2025

1. Nonlinear characteristics The diodes, thyristors and other power electronic devices in rectifier equipment have nonlinear voltammetry characteristics. Take the diode as an example, when the input AC voltage is in positive half circle, the diode is positive and the current can pass through; At the negative half cycle, the diode is reversed off and the current is almost zero. This characte...

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Advantages of lead-acid colloidal batteries

Mar , 28 2025

1. Long service life: The colloidal electrolyte can form a solid protective layer on the plate, reduce the bending and short circuit of the plate when used under heavy load, delay the softening and shedding of the plate, and make the battery life reach 1.5-2 times that of ordinary lead-acid batteries. 2. High safety: The electrolyte is solid, sealed, and never leaks. There is no acid mist gas prec...

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How to choose the right lithium battery

Mar , 28 2025

1. Identify application scenarios The purpose of lithium batteries directly affects parameter selection: Portable devices (mobile phones, drones, cameras): give priority to high energy density (such as ternary lithium batteries) and lightweight. Electric vehicles/power tools: require high discharge rate (C-rate) and long cycle life (such as lithium iron phosphate batteries). Energy storage systems...

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Why battery calibration?

Apr , 03 2025

Definition of Battery Calibration Battery calibration refers to the process of resetting and synchronizing the battery's power management system with the device's software to accurately gauge the battery's charge level and capacity. This procedure involves fully charging the battery, allowing it to drain completely, and then recharging it to recalibrate the device's battery indicator to provide ac...

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Calculation of the heat generation of lithium batteries

May , 24 2025

The calculation of heat generation of lithium batteries is an important part of battery thermal management, involving multiple heat sources. The following are the detailed calculation methods and steps: 1. Main source of heat The heat generation of lithium batteries mainly comes from the following parts: Joule heat (Qj) : The heat generated when current passes through the internal resistance of a ...

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The reason why LiFePO4 batteries cannot be charged but can be discharged below 0℃

Jun , 07 2025

Why LiFePO4 Batteries Cannot Be Charged Below 0°C but Can Still Discharge The reason why LiFePO4 (Lithium Iron Phosphate) batteries, such as the EverExceed battery range, cannot be charged below 0°C yet can still discharge lies mainly in their electrochemical characteristics and safety considerations. 1. Why Charging Is Restricted at Low Temperatures Lithium Plating Risk: At sub-zero temperatures,...

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How Low-Voltage Active Power Filters Compensate for Harmonics in the Power Grid

Jun , 16 2025

With the increasing use of nonlinear loads such as variable frequency drives, rectifiers, and other power electronic devices, power grid harmonics have become a common problem in low-voltage electrical systems. Low-voltage active power filters (APFs) play a key role in detecting and mitigating harmonic distortion to improve power quality. Here’s how APFs work to actively compensate for harmonics i...

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The Impact of High Temperatures on Lead-Acid Batteries and Recommended Solutions

Jul , 19 2025

Lead-acid batteries are widely used in energy storage, telecom base stations, and UPS systems. However, their performance is significantly affected by ambient temperature—especially under high-temperature conditions, which can lead to rapid degradation and potential safety risks. Below are six key impacts of high temperature on lead-acid batteries and how to address them: 1. Short-Term Capacity Ga...

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Understanding THDI: Total Harmonic Distortion in Current

Aug , 08 2025

As modern power systems rely more on nonlinear loads, Total Harmonic Distortion in Current (THDi) has become a critical factor in ensuring power quality and equipment longevity. In this article, we explore what THDi is, its causes, its impacts on equipment, and how to mitigate it using advanced harmonic filtering techniques. 1. What is THDi? THDi stands for Total Harmonic Current Distortion. It is...

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The Hazards of Overcharging Lead-Acid Batteries

Aug , 08 2025

1. Significant Capacity Decline ① During overcharging, excessive chemical reactions occur inside the battery. The active material, lead dioxide, on the positive plate gradually becomes loose and loses its original structural stability, reducing its ability to participate in electrochemical reactions. ② The active material, spongy lead, on the negative plate also experiences a coarsening of particl...

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Why EverExceed Ni-Cd Batteries Use Potassium Hydroxide (KOH) as Electrolyte

Aug , 22 2025

When it comes to industrial-grade energy storage, nickel-cadmium (Ni-Cd) batteries remain a trusted choice thanks to their reliability, long service life, and excellent temperature tolerance. A critical factor behind this proven performance is the use of potassium hydroxide (KOH) as the electrolyte. At EverExceed, our advanced Ni-Cd batteries are engineered with optimized KOH formulations to maxim...

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