Solar batteries Absorbent glass mat (AGM) is a class of lead-acid deep cycle battery in which the electrolyte is absorbed into a fiberglass mat. The plates in an AGM battery may be flat like wet cell lead-acid battery, or they may be wound in a tight spiral. The internal resistance of AGM...
Solar batteries Absorbent glass mat (AGM) is a class of lead-acid deep cycle battery in which the electrolyte is absorbed into a fiberglass mat. The plates in an AGM battery may be flat like wet cell lead-acid battery, or they may be wound in a tight spiral. The internal resistance of AGM batteries is lower than traditional cells, they can handle higher temperatures, and self discharge more slowly.
Product Features of solar batteries
Long design life(25℃): 5 years(≤28Ah), 10 years(＞28Ah)
Low self-discharge rate: ≤3%/Month
Good high rate discharge performance
High sealed reaction efficiency ≥99％
Wide operation temperature range: -20℃~60℃
Structure: Compact design, shorter internal connectors between cells, thus low internal reisistance
Plate: Pasted flat type, with patent deep cycle formula of AM
Terminal: Two or more types terminals are convenient for selection
Vent system: Gases can be vented through flame arrester / filter;
Separator: Using improved AGM separator, makes lower resistance higher assembling pressure to increase deep cycle life;
Terminal sealing: Double sealing technics ( mechanical+epoxy gule).
Specifications of solar batteries
Cells Per Unit
Voltage Per Unit
120Ah@10hr-rate to 1.80V per cell @25℃
407 x 177 x 225mm
Max. Discharge Current
1200 A (5 sec)
Approx. 4 mΩ
Operating Temperature Range
Discharge: -20℃ ~60℃;
Normal Operating Temperature Range
Float charging Voltage
13.6 to 13.8 VDC/unit Average at 25℃
Recommended Maximum Charging Current
Equalization and Cycle Service
14.6 to 14.8 VDC/unit Average at 25℃
CHENGYU Valve Regulated Lead Acid (VRLA) batteries can be stored for more than 6 months at 25℃. Self-discharge ratio less than 3% per month at 25℃. Please charge batteries before using.
A.B.S. UL94-HB, UL94-V0 Optional.
Quality Control--37 production process, 7 steps of quality checks to ensure 100% of our gel rechargeable batteries is stable and highly reliable when leaving our factory.
Rechargeable batteries has the characteristics of environmental protection, low temperature resistance, long life, strong power and so on. All the indexes meet or exceed the international standard.
Advantage of solar batteries
AGM batteries are totally sealed and are easy and safe to transport
They never need topping up with water
They can be safely mounted inside a boat, car, caravan, motorhome etc
AGM batteries only need to be vented to atmosphere, they do not need to be in a sealed box vented to the outside like wet batteries, and can be mounted on their sides or ends if needed.
Due to their very low internal resistance AGM batteries will fully charge at a lower voltage, and accept a much larger charge current, so when charging from a standard car/truck alternator these batteries will all but fully charge, and they will charge quickly, in about 3 hours!
AGM batteries can be discharged deeper than conventional deep cycle batteries without major damage.
AGM batteries only self discharge at the rate of up to 3% per month, and even after 12 months sitting idle can be recharged and put back into full service without any major damage. (A standard deep cycle battery if treated the same way will have destroyed itself, it will no longer hold a good charge)
AGM batteries were originally developed for the military, they are very robust.
Our battery inside VS some insufficient battery
Q1. Can I have a sample order for 12v 120ah agm battery?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A:Sample needs 3-5 days, mass production time needs 1-2 weeks for order quantity more than
Q3. Do you have any MOQ limit for 12v 120ah agm battery order?
A: Low MOQ, 1pc for sample checking is available
Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by sea.
Q5. How to proceed an order for 12v 120ah agm battery?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.
Q6. Is it OK to print my logo on 12v 120ah agm battery product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
Q7: Do you offer guarantee for the products?
A: Yes, we offer 2-5 years warranty to our products.
Q8: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.2%.
Secondly, during the guarantee period, we will send new 12v 120ah agm battery with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation.