Overcharging lead acid batteries dangerous,9v rechargeable battery charger circuit diagram,battery life of samsung galaxy ace plus,how to repair tab 2 battery ebay - PDF Review

30.05.2014
Charging LONGWAY Valve Regulated Lead Acid Batteries----LongWay Battery Manufacturing Co., Ltd. The lead acid battery is a truly unique device - an assembly of the active materials of a lead dioxide (Pb02) positive plate, sulfuric acid (H2SO4) electrolyte and a sponge (porous) lead (Pb) negative plate which, when a load is connected between the positive and negative terminals, an electrochemical reaction occurs within the cell which will produce electrical energy (current) through the load as these active materials are converted to lead sulfate (H2SO4) and water (H20). In theory, this discharge and recharge process could continue indefinitely were it not for the corrosion of the grids onto which the lead dioxide (Pb02) and lead (Pb) active materials are pasted, deterioration of the lead dioxide and sponge lead active materials of the positive and negative plates, and in the case of VRLA batteries, drying of the electrolyte. It only requires between 107% and 115% of the ampere hours energy removed from a lead acid battery to be restored to achieve a fully charged system capable of delivering 100% of its rated capacity. Once the plates of the battery are fully converted to their original lead dioxide (Pb02) in the positive plate and sponge lead (Pb) in the negative plate, most of the additional ampere-hours or charging current are consumed in the electrolysis of the water in the electrolyte.
As shown in Equation 4, the water (H20) in the electrolyte at the positive plate is broken down into oxygen gas (02), free hydrogen ions ( 4 H+ ) and free electrons (4e-).
At the end of 2012, Kweight sales team relocated sales office in Longhua district, Shenzhen.
The demand of power application is large for lead-acid batteries, but in the long term, energy storage is also an important direction in lead-acid battery industry. However, there are still many domestic public opinion is that the sealed lead acid battery will be eliminated, lithium battery will be main storage battery in the future. An institution in the United States estimated , if the smart grid energy storage plants are builit on a large-scale, battery usage may be 10 times than the previous traditional industries.
From the perspective of the development of the industry itself , the lead-acid battery existence for 152 years , but growing amount of technological advances , and continuously improve production efficiency , there must be the reasonableness of its existence.
The biggest advantages of lead-acid batteries is that the cost is serval time lower than lithium battery. Based on special lead plates structure and thick grid design, special addictives formula & vacuum acid filling technique, Kweight offer a reliable long service life. Battery Physical situation:Deposit accumulates at the bottom of battery and can short out a cell of battery.
Battery Sulfation: A battery is allowed to remain discharged too long or stored too long, the lead sulfated is accumulated and hardened on the plates. Battery Overheating: The temperature of electrolyte is up to 50 ?, which increase the chemical action inside battery. Freezing environment: When the electrolyte freezes, the ice formed will discharge active material from the plates. Vibration: The active mateirla will be shaked off from the positive lead paltes, when the battery is vibrated continually. Battery Overcharging: Water will be converted to gas, and decrease the electrolyte water content, when the battery overcharged.
The batteries are characterized by field-proven long life, low water consumption, and low self discharge rate.
The positive armor plate is of a tubular design, which means that the active substance (Pb02) is contained in special bags made of polyester fibers, and hardened by an impregnating compound. The grids of the positive and negative plate are made of special alloys with additional agents for the improvement of the crystalline structure in casting. A cell plug seal (ceramic filter) prevents leakage of any sulphuric acid vapors, however it does not restrict hydrogen and oxygen flow. Batteries can be used immediately as they are normally filled with electrolyte and electrically charged. OPzS Type Stationary Batteries are intended for applications including utilities, telecommunications, computers, emergency lighting, alarms, control and monitoring systems in power plants and distribution stations, on railway stations, airports, etc.
At 80% DOD the recharging time with IV characteristic (V = 2.35V) depends on the initial current (I).
Firstly, we would like to let you know: two factors affact the life of battery, one factor is Acid, the other is Lead plates. Wider temperature range(- 40? to 60?) make sure the battery can be supplied enough power, even if battery is used in extreme environment.
You must have JavaScript enabled in your browser to utilize the functionality of this website. Also known as SLA, VRLA (valve-regulated lead-acid battery), sealed lead acid batteries have many uses in today’s world. No, you may use other brands as long as the voltage and dimensions match your original battery. The life of a sealed lead acid battery will depend upon a number of factors including application, operating temperature and the charging method.
Some machines systematically charge the SLA battery, for example some home alarm or backup systems.
If you do need to charge your SLA battery with a battery tender, selecting the correct battery charger will impact the performance and service life of a sealed lead acid (SLA) battery. Since SLA batteries are used in a variety of products, batteries are available in a variety of different terminal configurations. Visit our Battery Recycling page for more information on how to properly dispose of your sealed lead acid battery.


SLA (Sealed Lead Acid) and VRLA (Valve Regulated Lead Acid) are different acronyms for the same battery.
Both types of batteries are sealed, valve regulated batteries allowing them to be used in any position.
AGM (absorbed glass mat) is a specially designed glass mat made to wick the battery electrolyte between the battery plates. Gel Cell Batteries do not offer the same power capacity as do the same physical size AGM batteries. Note: If you need help accessing information in different file formats, see Instructions for Downloading Viewers and Players. When the load is removed and replaced by an appropriate DC current source, electrical energy (charging current) will flow through the battery in the opposite direction converting the active materials to their original states of lead dioxide, sulfuric acid and lead. For example, if 10 ampere hours of energy had been removed from a battery during discharge, then 10.7 ampere hours of energy would have to be replaced through the charging activity to restore 100% of capacity. The free electrons are "pulled" from the positive plate by the connected charger and "pumped" to the negative plate as noted in Equation 5. The summary is, in most cases, divided into the method employed during the specific phase (bulk, absorption or float) of the charging regime.
Utilize temperature compensation of the charging voltage where wide temperature variations and extremes are anticipated.
If constant current is to be employed for the final "trickle" charge, it should not exceed 1 milli-ampere per ampere-hour of-capacity for the gelled battery or 2 milli-ampere ampere-hour of capacity for the AGM battery. For example , some enterprises build removable – storage photovoltaic power station, using lead-acid battery or lithium battery to store power. The grid of lead plate is made by lead-calcium alloy, which is less pollution to environment. The separators(AGM, PVC etc.) fail to insulate the positive and negative plates in a cell, so the cell is shorted, destroying the battery. The electorlyte can’t cover the top portion of plates, and the recharge ability of battery is going down.
The lead sulfate is not able to reconstitute the electrolyte & lead active material on the plate.
High temperature will cause corrosion of plates heavier by electrolyte, and the battery is failed. Without enough electrolyte, higher density electrolyte and exposing some lead plate, will destory the battery. Such construction prevents the potential escape of the active material during operation, and ensures a long operating life. Negative plates are mass-type plates with special alloys maintaining a porosity of an active material during the operation.
The maximum and minimum levels are marked on a self-adhesive acid-resistant label on the side of the container. The capacity tests are performed at the factory prior to dispatch, and may be re-confirmed on site by the end user when required. Due to the extremely low levels of self-discharge, they are also suitable for photovoltaic applications. With initial current I5, the 85% of recharge is achieved in approximately 4 hours and the 100% recharge is achieved in an additional 5-6 hours. Float charge voltage adjustment is recommended to avoid overcharge or undercharge conditions. However, this recharge procedure is recommended in cases where frequent depth of discharge (below 40 % C10.) occur.
Nano-Gel can make acid equally cover every lead plate, to make sure there are enough acid inside battery when the battery is used for a long time. From modern motorcycles, ATVs, home alarm systems, toys, backup systems, workout equipment, generators and the list goes on. As a general rule of thumb when selecting a charger for an SLA battery is to use one that is no more than 20% of the capacity rating of the battery (at a 20hr. Please refer to our battery terminal page for pictures and dimensions of the different terminals.
This battery type has the following characteristics: Maintenance-free, leak-proof, position insensitive.
This thick paste-like material allows electrons to flow between plates but will not leak in a gel battery if the case is broken. Both batteries have similar traits such as being non-spillable, able to be mounted in any position, low self-discharge, safe for use in limited ventilation areas, and may be transported via air or ground safely without special handling. In most cases, recharge can be accomplished by using a good quality standard battery charger.
However, the Gel Cell excels in slow discharge rates and slightly higher operating temperatures and with excellent deep cycle capability. This "recharging" of the battery restores the potential energy, making it again available to produce the electrical current during a subsequent discharge.


Charging at too high a rate or forcing more than the 107% required into the battery constitutes overcharging and results in additional grid corrosion , gassing and consumption of the water in the electrolyte. As the free hydrogen ions (4H+) migrate through the electrolyte and contact the negative plate, where there is an excess of electrons, then hydrogen ions take on an electron, and hydrogen gas (2H2) is formed.
The actual charging regime selected will be a combination of the following individual methods. This is the attempt of a portfolio of technologies : on the one hand it can absorb solar energy , on the other hand to adjust the peak-to-valley , peak load shifting, which constitutes part of the smart grid . Lead-calcium alloy grid is much friendly to environment compared with lead-antimony-cadmium alloy grid. We use latest formation techniques, which is environment friendly & high efficiency etc. The low portions of lead plates is accelerated erosion in per cell, because the density of electolyte is higher, when the electrolyte is inadequate. Separators dividing the positive from the negative plates are made of micro porous plastic material with low electrical resistance for higher efficiency and lower self-discharge rates.
It is recommended that the OPzS type batteries be installed in systems where they are constantly connected to a rectifier. Neutralize any spilled electrolyte or exposed battery parts with soda ash or sodium bicarbonate until fizzing stops.
Batteries of this kind have a safety vent to release gas in case of excessive internal pressure build up. In case of AGM (absorbed glass mat), the newer of the two technologies, the electrolyte is absorbed by the glass fiber separator who acts like a sponge. Being a vented cell with liquid electrolyte, the oxygen gas (02) generated at the positive plate and the hydrogen gas (2H2) generated at the negative plate will percolate up through the electrolyte and into the surrounding atmosphere as the electrolyte level declines. In fact, lead-acid battery is still used on a large scale in the energy storage station in United States.
Lead-calcium alloy grid makes the battery low self-discharge, less water loss & long cycle life. If you are unfamiliar with SLA batteries, this article will help with any questions you may have.
The constant current will cause decomposition of the water in the electrolyte and premature aging. In a gel-type battery the liquid electrolyte turns into a gel right after the battery is filled. For example, the user may enter weight in pounds when the infusion pump requires it in kilograms.Pump labels or components become damaged under routine use.
Since the water that is gassed off can be replaced, this consequence of overcharging with has no impact on the life of the vented cell.
The biggest features of lead-acid battery are low cost , use and maintenance simple, recyclable, high recycling rates, up to 95%, reflecting the circular economy, safe and reliable but also economic benefits.
Also, it is recommended to read if you are thinking about replacing your current sealed lead acid battery. Gel Cell batteries must be recharged correctly or the battery will suffer premature failure.
For example, cleaning the pump, as the user-maintainer believes is acceptable practice, may damage the pump, making it unreliable for clinical use.
It’s not need to build power plants in the city center, and it’s not high requirement on land, no often moving, do not need no special requirements on the weight, so the lead-acid battery is the ideal choice for large – scale energy storage power station. Because of the design, gel cell batteries don't offer the same power capacity as do the same physical size AGM battery.
Users with long fingernails may damage the print on the pump keys, making them unreadable.User instructions or cues for mechanical set-up are not specific or clear enough. For example, an alarm indicating low battery charge may not be displayed in time for a user to prevent pump shut-off during a critical infusion while a patient is in transport. In the example below, it is unclear if the user is confirming the warning message or the infusion settings.User manuals are confusing, inadequate, outdated, or unavailable.
The bump in the door will catch on the lower flange of the tubing set instead of fitting between the lower and upper flanges as intended. See photo on right.A patient returns from ambulating and forgets to plug in the infusion pump. The infusion pump alarms with a low battery message, but the speaker volume is set too low, and the alarm goes unnoticed.



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