Is this a genuine Yuasa battery or a Genesis / Enersys battery as one of your reviewers has stated?

Mine was marked and branded Yuasa.

what are the messurments for this item yuasa battery np4-12 12 v 4ah battery

The battery measures 3-1/2" wide by 2-7/8" deep by 4" high. I hope this helps you.

What is the: a. useful life b: warranty period?

This is a battery backup for my home alarm system. The life span is about a year and a half. I am not sure about the warranty but I am happy with its performance.

How long do I charge this battery?

If this battery is for Alarm System purposes: It will recharge itself automatically when connected. In the meantime after installing it: The Alarm System will keep indicating that the battery is at fault, but as soon as the battery is fully charged (will take several minutes) the "error" panel light will be Off. Hope this helps :)

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Description

desertcart.co.jp: YUASA バッテリー NP4-12 12V 4AH バッテリー : Automotive Review: GOOD Review: identical to what appears to be the original battery in an old Precor stationary bike. Same brand, identical dimensions. new and reasonably priced.

Specifications

Brand	台湾ユアサ (TAIWAN YUASA)
Product Dimensions	7.01 x 8.99 x 10.59 cm; 1.54 kg
Batteries	1 12V batteries required. (included)
Item model number	NP4-12
Is Discontinued By Manufacturer	No
Amperage	4 Amps
Item Dimensions L x W x H	7 x 9 x 10.6 cm
Year	2009
Item Weight	1.54 Kilograms

Reviews

J**N

GOOD

30.05.2025

P**R

identical to what appears to be the original battery in an old Precor stationary bike. Same brand, identical dimensions. new and reasonably priced.

13.11.2025

G**E

Replaced original alarm battery works great Hopefully will last a few years

31.10.2024

R**T

The battery was easily installed and charged overnight. I attempted to start the mower the next morning it fired right up and runs beautifully.

10.05.2025

D**R

Item was as described. Worked perfectly for our alarm system.

1.11.2024

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