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Brand: YUASA
Yuasa NPL65-12I 12V 65Ah Long-Life AGM VRLA Battery
Description
Long-life 65 Ah block for standby and control power
The Yuasa NPL65-12I is a 12 V, 65 Ah (20-hour rate) valve-regulated AGM battery from the NPL series, which Yuasa describes as general purpose AGM VRLA batteries. Yuasa classifies it as EUROBAT Long life, 10 to 12 years, with a design life of up to 10 years at 20 °C. The 65 Ah size is a common choice for engine-room control supplies, switchgear tripping and closing supplies, alarm and telecom systems and small UPS strings.
The block has M6 female terminals, a standard ABS case rated UL94:HB and a maximum discharge current of 800 A for 1 second. Yuasa publishes a constant-power rating for the 10-minute rate to 9.6 V per block, which is useful when sizing for a fixed-power load such as an inverter.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / series | Yuasa, NPL series (NPL65-12/I/NF/Box) |
| Nominal voltage | 12 V |
| Capacity, 20-hour rate to 1.75 V per cell at 20 °C | 65 Ah |
| Capacity, 10-hour rate to 1.8 V per cell at 20 °C | 60.1 Ah |
| Constant power, 10-minute rate to 9.6 V per block at 20 °C | 1401.18 W typical per block (233.53 W per cell to 1.6 V) |
| Dimensions (L x W x H) | 350 (±2) x 166 (±1) x 174 (±0.5) mm |
| Weight | 22.6 kg |
| Terminals | M6 female; torque 4.8 Nm |
| Case material | ABS, UL94:HB; standard case |
| Float charge voltage at 20 °C | 13.65 V per block (2.275 V per cell), ±1 %; correction -3 mV per cell per °C |
| Cyclic (boost) charge voltage at 20 °C | 14.5 V per block (2.42 V per cell), ±3 %; correction -4 mV per cell per °C |
| Charge current limit | 16.25 A float; 16.25 A cyclic |
| Maximum discharge current | 800 A for 1 s; 500 A for 1 min |
| Internal resistance at 1 kHz | 5.5 mΩ |
| Operating temperature | Storage -20 to +60 °C; charge -15 to +50 °C; discharge -20 to +60 °C |
| Self-discharge | About 3 % capacity loss per month at 20 °C |
| Design life / classification | Up to 10 years at 20 °C; EUROBAT Long life, 10 to 12 years |
| Certifications listed | ISO 9001, ISO 14001, ISO 45001, Underwriters Laboratories |
Installation notes from the data sheet
The battery can be installed and operated at up to 90 degrees from upright, must not be suspended by its handles, and has a resealing low-pressure valve on each cell. Hydrogen released by VRLA batteries can form explosive mixtures in air, so it must not be installed in a sealed container. At end of life it must be recycled in line with local regulations.
For parallel strings, keep the same battery type, age and temperature across strings and fit equal-length cabling so that the strings share current evenly.
Selecting an NPL battery
| Model | Voltage | Capacity (Yuasa page) | Case |
|---|---|---|---|
| NPL24-12I | 12 V | 24 Ah | NF (standard) |
| NPL38-12I | 12 V | 38 Ah | NF (standard) |
| NPL65-12I (this page) | 12 V | 65 Ah | NF (standard) |
| NPL78-12IFR | 12 V | 78 Ah | FR (flame retardant) |
| NPL100-12FR | 12 V | 100 Ah | FR (flame retardant) |
Check the required backup time against the discharge tables for the actual load and end voltage, and confirm the available space. For a smaller published battery see Yuasa NP12-12 sealed lead acid battery.
Documents and quotation
The Yuasa technical data sheet is attached. For a quotation send the model, quantity and the application. Browse UPS and Batteries for other batteries and UPS products.
Datasheets & Documents
- Datasheet Yuasa NPL65-12I technical data sheet Download
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About brand
Yuasa, a brand of Kyoto-based GS Yuasa Corporation with roots going back to 1918, is known for sealed lead-acid batteries used in standby power. Its NP series of valve-regulated batteries serves standby and cyclic duty in UPS units, alarm panels and control cabinets. Seven Star LLC lists the Yuasa NP12-12 and supplies Yuasa sealed lead-acid batteries to industrial and commercial facilities in Oman.
Yuasa NP batteries listed here
The Yuasa NP12-12 is a 12 V, 12 Ah sealed lead-acid battery of the absorbent glass mat type with Faston terminals. In NP designations the first number is the capacity in ampere-hours and the second is the nominal voltage, so NP7-12 would be a 7 Ah, 12 V block. Extra letters after the number mark a variant, such as FR for a flame-retardant case.
Ordering Yuasa batteries: what we need
Send the full type printed on the battery, including any suffix letters, and the quantity. Tell us the equipment it serves, such as a UPS model or a fire alarm panel, and the terminal type on the old battery. Measure length, width and height if the label is missing. For a UPS, state how many blocks are in the string, since they should be replaced together. We also quote Yuasa batteries for buyers elsewhere in the GCC.
Browse YUASA products by category: UPS and Batteries.
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Frequently Asked Questions
What is the capacity of the NPL65-12I?
65 Ah at the 20-hour rate to 1.75 V per cell and 60.1 Ah at the 10-hour rate to 1.8 V per cell, at 20 °C.
What is the design life?
Yuasa states up to 10 years at 20 °C, with a EUROBAT classification of Long life, 10 to 12 years.
What are the dimensions and weight?
350 x 166 x 174 mm and 22.6 kg according to the data sheet.
What float voltage is recommended?
13.65 V per block at 20 °C, with a correction of -3 mV per cell per °C.
Is the case flame retardant?
The NPL65-12I has a standard ABS case rated UL94:HB. Flame-retardant FR versions of other NPL sizes are listed separately.
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