FIR2023-0115+Fire_Alarm_Battery_Calculations+11.29.2023_2.30.17_PM+3924397RECEIVED
NP SERIES - NP7-121 Dec 04 2023 FIR2023-0115
CITY OF EDMONDS
DEVELOPMENT SERVICES
Reliability is your Security DEPARTMENT
Utilizing the latest advance design Oxygen
Recombination Technology, Yuasa have applied their
80 years of experience in the lead acid battery field to
produce the optimum design of Sealed Lead Acid
batteries.
FEATURES
• Superb recovery from deep discharge.
• Electrolyte suspension system.
• Gas Recombination.
• Multipurpose: Float or Cyclic use.
• Usable in any orientation
• Superior energy density.
• Lead calcium grids for extended life.
• Manufactured World wide.
• Application specific designs.
Technical Features
Sealed Construction
Yuasa's unique construction and sealing technique
ensures no electrolyte leakage from case or terminals
Electrolyte Suspension System
All NP batteries utilize Yuasa's unique electrolyte suspension
system incorporating a microfine glass mat to retain the
maximum amount of electrolyte in the cells. The electrolyte is
retained in the separator material and there is no free
electrolyte to escape from the cells. No gels or other
contaminants are added.
Control of Gas Generation
The design of Yuasa's NP batteries incorporates the very latest
oxygen recombination technology to effectively control the
generation of gas during normal use.
Low Maintenance Operation
Due to the perfectly sealed construction and the
recombination of gasses within the cell, the battery is
almost maintenance free.
Terminals
WT-12 12VAh
IT
YUASA
Terminals
NP batteries are manufactured using a range of terminals
which vary in size and type. Please refer to details as
shown.
Operation in any Orientation
The combination of sealed construction and Yuasa's
unique electrolyte suspension system allows operation in
any orientation, with no loss of performance or fear of
electrolyte leakage.
Valve Regulated Design
The batteries are equipped with a simple, safe low
pressure venting system which releases excess gas and
automatically reseals should there be a build up of gas
within the battery due to severe overcharge. Note. On no
account should the battery be charged in a sealed
container.
Layout
Fasten tab, 187 A Fasten tab, 250 ❑
f85 - 004 d INCH = 11 M .2W . M4 9c� INCH = IWBVI
.250 6.35 .310 7.00
�9 .185 4.7a .250 6.35
- .124 3.15 .16 4.0
.098 2.50 s 031 0.8
.059 1.5a — a20 a.5
.031 0.sa
020 0.5a
004 0.1 a
MY
General Specifications
Nominal Capacity (Ah)
N137-12
20hr to 1 .75vpc 300C
7
1 Ohr to 1 .75vpc 200C
6.4
5hr to 1.70vpc 200C
5.9
1 hr to 1 .60vpc 20°C
4.2
Voltage
12
Energy Density (Wh.L.20hr)
91
Specific Energy (wh.kg.20hr)
32
Int. Resistance (m.Ohms)
25
Maximum discharge (A)
40/75
Short Circuit current (A)
210
Dimensions (mm)
Length
151
Width
65
Height overall
97.5
Weight (Kg)
2.65
Terminal
j A/D
Layout
1 4
Terminal Torque Nm
-
NP SERIES - NP7-12
Lead Calcium Grids
The heavy duty lead calcium alloy grids provide an extra margin of
performance and life in both cyclic and float applications and give
unparalleled recovery from deep discharge.
Long Cycle Service Life
Depending upon the average depth of discharge, over a thousand
discharge/charge cycles can be expected.
Float Service Life
The expected service life is five years in float standby applications.
Separators
The use of the special separator material provides a very efficient
insulation between plates preventing inter -plate short circuits and
prohibiting the shedding of active materials.
CYCLIC RECHARGE REGIME
�
Bmk Cnuyc � Slerboy COArgA
0.9
160
7
�I
"5
126
1
15
1 Ch.rrMy.—
15
0.2
100
e CI"P M4NW0 ..
14
0.15
76
g�
Q
`39
19
[9 0.1
'A
' Curwnt TrV Ponl
12
-OA7CAmpa 1
� OAS
RS
1 1
11
1 Carp C~
rm
NP DISCHARGE CHARACTERISTICS
CURVES AT 252C (772F)
(V) M Note- C - Given capacity as staled on each b.9e In Ah
FOR 12V FOR 6V
BATTERY BATTERY
13.0
NP AT 25°C (77-F)
6,5
12.0 6.0
11.0 5
10.0 5.0 azCA
A a a
9.0 4.5
1 2 4 6 61❑ 20 49 60 2 4 E 610 20
MINUTES HOURS
DISCHARGE TIME
FLOAT SERVICE LIFE NP RANGE
TESTINGCONDITIONS', FLOATING VOLTAGE', 2.27BVPC
(AH`"�
H AMBIENT TEMPERATURE. 20°C(66°F TO 72°F)
U
120
d
v 100
80
6V
z m
4D
wJ
U_ 20
a
a. 0
1 2 3 4 5 5,5
LIFE (YEARS)
)11 r(
YUASA
Yuasa Battery Inc.
2901 Montrose Ave
Laureldale, PA 19605
www.yuasabatteries.com
Registered number 1548820
Cat. No NP7-12 January 08
Long shelf Life
The extremely low self discharge rate allows the battery to be
stored for extended periods up to one year at normal ambient
temperatures with no permanent loss of capacity.
Operating Temperature Range
The batteries can be used over a broad temperature range
permitting considerable flexibility in system design and
location.
Charge —15°C to 50°C
Discharge — 200C to 600C
Storage — 200C to 50°C (fully charged battery)
SELF DISCHARGE CHARACTERISTICS
(40) laa
75
U
•r (50-F)
U
[� 60
40"C I104°
oC (66`F)
25
0 3 6 9 12 15 16
STORAGE TIME (MONTHS)
FLOAT CHARGE CHARACTERISTICS
0.250A-
2-275VPC CONSTANT VOLTAGE CHAR3ING
Sst} {6CA) M
AT 2M (WF)
14o
M
120 026
7.30 i
q,ARGEP MOLU1'1E_ - -
_ 15.0
00 ❑M
-
7.00 _
CMROE VOLTAGE
15.0
0_13
6.50 5 I
— AFTER 100%DISCHARGE
18.0
0,10 1 j
- - - AFTER M DOCFIARGE
°0 8.00
12.0
ao 0.M r1
g,50
CHAR[11Nq CVRRENT
11A
D 2
4 E 6 10 12 14 16 1g
20
CHARGING TIME (HOUAS5
TYPICAL DISCHARGE CHARAC-
TERISTICS NP RANGE
CYCLE SERVICE LIFE IN RELATION
TO DEPTH OF DISCHARGE
TESTING CONDITIONS: DISCHARGE CURRENT 0.17C Amp. (F.V 1.7V/CELL
CHARGING CURRENT. 0.09C Amp.
CHARGING VOLUME'. 125%OF DISCHARGED CAPACITY
(AH-10 AMBIENT TEM PERATURE,20-CTO25'C(WFT077-F)
gi
'a
> ,x
O 100% 5096 30°,.DEF7
DOD DOD OF DISCH ROE
a
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