China High Quality 12V 52Ah Sealed Maintenance Free Lead Acid Battery 72 Volt Motorcycle Battery

1. Does deep cycle battery develop a memory?
Lead acid batteries do not develop any type of memory. This means that you do not have to deep discharge or completely discharge a battery before recharging it. For optimum life and performance, we generally recommend a discharge of 20 to 50% of the batteries rated capacity even though the battery is capable of being cycled to 80%.
2. What are the 2-hour, 3-hour and 20-hour rates? Why battery has different capacity at different hour rates?
The 2-hour rate is the amount of Ahs the battery will deliver during a 2-hour discharge, so 3-hour rate is the amount of the Ahs the battery will deliver during a 3-hour discharge, and 20-hour rate is the amount of the Ahs the battery will deliver during a 20-hour discharge. The capacity of a battery, in Ahs, is a dynamic number that is dependent on the discharge current. For example,a battery that is discharged at 10A will give you more capacity than a battery that is discharged at 100A. With the 20-hr rate, the battery is able to deliver more Ahs than with the 2-hr rate because the 20-hr rate uses a lower discharge current than the 2-hr rate. Both rates are used as baselines in different parts of the world. Either rate, however, will give you the same view of a battery. A higher capacity battery will have higher 5 and 20 hour rates than a battery with lower capacity.
3. Can I do a partial replacement of my batteries?
Partial battery replacement of lead acid battery banks is not recommended. The behavior of batteries during discharging and charging varies throughout their lifespan and if all the batteries are the same age, than they all will have similar responses. The danger with replacing only one battery is that the older batteries tend to require more charge than newer batteries, and since the new batteries are in the same circuit, they too will be overcharged. There is also the chance that the older batteries will be undercharged since the overall voltage response of all the batteries (old and new) will not be a good representation of either group. The charging system might erroneously think that ALL the batteries have reached the desired voltage and it may stop the charging of the batteries prematurely. So, we will recommend you to replace the battery with similar characteristics instead of a brand new battery.
4. What is the difference between a deep cycle battery, a starting battery, and a dual-purpose battery?
A deep cycle battery has the ability to be deeply discharged and charged many times during its service life. It is designed
specifically for powering electrical equipment for long periods of time. An automotive or starting battery is designed for brief bursts of high current and cannot withstand more than a few deep discharges before failure. This is why it is unable to start your car if you accidentally leave the lights on more than a couple of times. For applications where both engine starting and light deep cycling are required, a dual-purpose battery is often used. This type of battery is neither a starting nor a deep cycle battery but rather a compromise between the two so it performs both functions adequately. Only deep cycle batteries should be used in renewable energy applications.
5. Are lead acid batteries recyclable?
In some cases, the electrolyte is cleaned and reprocessed and sold as battery grade electrolyte. In other instances, the sulfate content is removed as Ammonia Sulfate and used in fertilizers. The separators are often used as a fuel source for the recycling process.
6. What is the shelf life of my battery?
The limiting factor of battery’s shelf life is the rate of self-discharge which itself is temperature dependent. VRLA batteries
will self-discharge less than 3% per month at 77º F (25º C). VRLA batteries should not be stored for more than 6 months at 77º F (25º C) without recharged. When batteries are taken out of long storage, it is recommended to recharge before use.
7. What is VRLA battery, Gel battery and AGM battery?
A VRLA battery (valve-regulated lead-acid battery), more commonly known as a Sealed Lead Acid battery (SLA battery) or Maintenance Free battery (MF battery), is a type of lead-acid rechargeable battery. Due to their construction, they can be mounted in any orientation, and do not require constant maintenance. During the normal operation, there are very less gas released from the battery due to the high efficiency of inner gas recommendation, so there is very less water loss during normal operation. So the VRLA battery are not required for filling water or acid during normal operation. The term "maintenance free" is a misnomer as VRLA batteries still require cleaning and regular functional testing. They are widely used in electric vehicles, large portable electrical devices, off-grid power systems and similar roles, where large amounts of storage are needed at a lower cost than other low-maintenance technologies like lithium-ion.There are two primary types of VRLA batteries, Gel type and AGM Type. Gel battery add silica dust to the electrolyte, forming a thick putty-like gel. These are sometimes referred to as "silicone batteries". AGM, short for "absorbed glass mat", batteries feature fiberglass mesh between the battery plates which serves to contain the electrolyte. Both designs offer advantages and disadvantages compared to conventional batteries, as well as each other.
8. What is Polymer Gel battery or so called “AGM + Gel battery”?
Polymer Gel battery or AGM+Gel battery, sometimes it has also been called as “semi-gel battery”, is developed based on AGM technology but the difference is the electrolyte. Polymer Gel battery has utilized polymer Gel in the electrolyte and it offers the battery better high/low temperature performance and cycle performance compare to AGM battery. And Liban battery belongs to Polymer Gem Battery.