BigBattery 48V RHINO User manual

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1
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Applications & Features . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1. Battery Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2. BMS Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Warnings & Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1. Installation Safety Guidelines . . . . . . . . . . . . . . . . . . 7
5.2. Parts & Components . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.3. Wall Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4. Floor Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6. Battery Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2. BMS Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7. Warranty & Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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1. Introduction
Introducing the RHINO! BigBattery’s 48V RHINO is a powerful, high-capacity wall-
mountable battery, with a design that does not compromise. BigBattery was able to fit
this high-performance unit in only 11.2 cm (4.4 in) of thickness, making it the thinnest
wall-mounted battery in its class. This User Manual is designed to provide you with an
understanding of the specs, features, capabilities, and installation of this 14 kilowatt-hour,
276 amp-hour battery. Please read and take note of all safety information prior to
installing or operating your battery. This document applies only to the BigBattery 48V
RHINO – FWRHN-48140-G1.
2. Features & Applications
BigBattery’s 48V RHINO battery (14 kWh, 276 Ah) is the ultimate solution for your solar
systems, off-grid power systems, emergency power supply, and more. The RHINO comes
equipped with an advanced BMS, and the newest cell technology, allowing it to operate
safely within a wide temperature range, as well as charge quickly and store safely at
temperatures as low as -20 °C (-4 °F). The 48V RHINO battery is guaranteed to last 5,000
– 8,000 Full Charge/Discharge Cycles. The battery utilizes an Anderson SB175 connection.
The RHINO is engineered to accommodate two different methods for installation: both
wall mounting and floor storage.
The 48V RHINO features a compact, elegant design that affords you versatility, as well as
space, which grants an easy connection to your larger power system. You can always
monitor your battery's health and performance with the LED interface located on the side
of the unit, which will display BMS status codes alerting you to the condition of your
battery. Equipped with the 48V RHINO from BigBattery, you will stay powered and
prepared!

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3
3. Product Specifications
3.1 Battery Specs
Parameter
Specification
Unit
System Voltage
48
Volts
Max Charging Voltage
58.8
Volts
Capacity (Ah)
276
Amp-hours
Capacity (kWh)
14
Kilowatt-hours
Chemistry
Lithium Iron Phosphate, LFP
LiFePO4
Voltage Range
43 – 58.8
Volts
Charging Current Limit
(Continuous)
175
Amps
Discharging Current Limit
(Continuous)
175
Amps
Normal Operating
Temperature Range
-20 - 65
(-4 – 149)
°C
(°F)
Ideal Storage Temperature
(Max. 6 mos.)
(humidity < 90%)
15 - 35
(59 – 95)
°C
(°F)
Weight
131.5
(290)
kg
(lbs)
Height
67.8
(26.7)
cm
(in)
Width
-
Width w/ Wall Mount
11.2
(4.4)
-
14.4
(5.7)
cm
(in)
-
cm
(in)
Length
110
(43.3)
cm
(in)
Safety Features
BMS (Battery Management System), Over Voltage, Under Voltage,
Over-Current Protection, Thermal Management System, 300A
Breaker
Max Battery Connections
Series: Not series capable
Parallel: Max. 8 connections

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3.2 BMS Specs
Category
Function
Specification
Unit
Charge
Voltage
Protection
Maximum Charger Voltage (CC-CV)
58.8
Volts
Overcharge Voltage Limit Cutoff
Protection (each cell)
3.8
Volts
Overcharge Voltage Limit
Protection Delay Time
2000
mS
Overcharge Protection Recovery
Voltage
3.45
Volts
Discharge
Voltage
Protection
Low Voltage Protection Limit
2.5 - 2.7
Volts
Low Voltage Protection Delay Time
2000
mS
Low Voltage Protection Recovery
2.9
Volts
Overcurrent
Protection
Charge Overcurrent Protection
Value
270 - 330
Amps
Charge Overcurrent Delay
30
Sec.
Charge Overcurrent Release
Recovery Condition
Reconnection delayed 120 seconds
Scenario 1:
Discharge Overcurrent Protection
300
Amps
Discharge Overcurrent Protection
Delay
30
Sec.
Scenario 2 (Likely Short Circuit):
Discharge Overcurrent Protection
800 - 1200
Amps
Discharge Overcurrent Protection
Delay
600 - 1800
mS
Discharge Overcurrent Protection
Recovery Condition
Reconnection delayed 32 seconds
Balance
Function
Minimum Cell Voltage to Activate
Cell Balancing
3.35
Volts
Voltage Difference to Activate Cell
Balancing
10
mVolts
Balancing Mode
Balance when charging
Balancing Current
100 - 260
µAmps

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Temperature
Protection
High Temperature Protection Value
when Charging
65
(149)
°C
(°F)
High Temperature Protection
Release Value when Charging
55
(131)
°C
(°F)
Low Temperature Protection Value
when Charging
-22
(-7.6)
°C
(°F)
Low Temperature Protection
Release Value when Charging
-18
(-0.4)
°C
(°F)
High Temperature Protection Value
when Discharging
75
(167)
°C
(°F)
High Temperature Protection
Release Value when Discharging
65
(149)
°C
(°F)
Low Temperature Protection Value
when Discharging
-30
(-22)
°C
(°F)
Low Temperature Protection
Release Value when Discharging
-27
(-16.6)
°C
(°F)
Resistance
Resistance in the Discharge Circuit
5 - 10
mΩ
Self-Power
Consumption
Operating Mode (relay closed)
35 - 50
µA
Sleep Mode
0.5
µA
Sleep Conditions
No current, communication, or prolonged
protection states
Time to Sleep Mode
18 hours
4. Warnings & Precautions
Lithium Iron Phosphate (LiFePO4) batteries are an inherently safe chemistry. However,
safety measures should always be taken. Please adhere to the instructions below for safe
handling and operation.
Warnings:
Do not charge with a charge voltage above 58.8V.
Do not charge nor discharge battery when temperature is above 65 °C (149 °F).
Do not install battery where it may contact conductive materials, water, seawater, strong oxidizers,
and strong acids.
Do not install battery in a location exposed to direct sun, hot surfaces, or hot locations. Do not install
batteries in a zero-clearance compartment. Overheating may result.
Keep any flammable/combustible material that may be ignited by heat, sparks, flames, or any other
heat source at a minimum distance of two feet away from the batteries.

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Disconnect batteries immediately if, during operation or charging, they emit an unusual smell, develop
heat, or behave abnormally.
Have a Class ABC or Class BC fire extinguisher on the premises.
Precautions:
Handle batteries and/or battery-powered devices cautiously to not damage the battery
casing or connections.
Do not charge battery when temperature is below -20 °C (-4 °F).
Do not discharge battery when temperature is below -30 °C (-22 °F).
Before storing battery for more than 6 months, charge the battery to 53V or above.
For long-term storage, disconnect batteries from your power system.
Always wear protective gear when handling batteries.
Do not place any objects on top of batteries.
Make sure all cable connections are properly tightened.
Install and remove batteries using the handles provided.

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5. Installation
5.1 Installation Safety Guidelines
WARNING: Before installing, make sure to review all safety guidelines,
warnings, and precautions in Section 4.
• Inspect batteries upon receipt for any signs of damage before use.
• Use a wrench with a rubber coated handle.
• Check to ensure that all cables are in good condition.
• When your battery has been charging and has come to maximum charge (up to 58.8V max.), your
battery may experience a slight voltage drop either immediately or within the hour after unplugging.
This is normal and should be no cause for concern.
5.2 Parts & Components
General
RHINO unit(s) (WR)
110 x 11.2 x 67.8 cm
(43.3 x 4.4 x 26.7 in)
1x Anderson SB175 to Ring Terminal
Cable (SB)
101.6 cm
(40 in)
2x/4x Rope Handles (RH)
56.4 cm
(22.2 in)
4x Flat Top Screws (FS)
1.3 cm
(0.5 in)

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Wall Mount Option
2x Mounting Cross Bars (A1 & A2)
90.9 cm
(35.8 in)
2x Spreader Bars (B1 & B2)
57.8 cm
(22.75 in)
6x Mounting Screws
(brick/concrete) (MS1)
5.8 cm
(2.3 in)
6x Mounting Screws (drywall) (MS2)
7 cm
(2.75 in)
Floor Stand Option
1x Floor Stand (FLS)
110 x 29.9 x 82.6 cm
(43.3 x 11.75 x 32.5 in)
2x Crossbar Plates (CP)
11 cm
(4.33 in)
4x Pan Screws (PS)
1.9 cm
(0.75 in)

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5.3 Wall Mount
Step 1:
If installing onto wood-studded drywall:
1. Choose the height you would like to install the battery and locate studs with a
stud finder where you will mount the top cross bar (A1).
2. Use a small drill bit to find the edges of the stud by drilling several small holes
horizontally.
3. Mark the center of the studs with a small vertical line.
4. Make another set of marks denoting the center of the studs 55.3 cm (21.75 in)
below your original markings. These will be for your second mounting bar (A2).
5. Place and level the first cross bar (A1) to line up the holes in the first cross bar (A1)
with the center stud marks.
6. Level and fasten first mounting cross bar (A1) onto the wall where you will be
installing your RHINO using the MS2 screws provided. This will be the top crossbar
of your wall mount.
If installing onto brick or concrete wall:
1. Choose the height you would like to install the battery.
2. Place and level the top cross bar (A1).
3. In each of the holes on the first cross bar (A1), mark the wall.
4. Make another set of marks denoting the center of the studs 55.3 cm (21.75 in)
below your original markings. These will be for your second mounting bar (A2).
5. Drill holes into the wall over each marking, and place the anchor portion of each of
your mounting screws (MS1) in each hole.
6. Place the first cross bar (A1) so it lines up with your drilled and anchored holes.
7. Level and fasten first mounting cross bar (A1) onto the wall where you will be
installing your RHINO using the MS1 screws provided, as seen in Figure 1. This will
be the top crossbar of your wall mount.
Fig. 1
(Make sure to use the appropriate mounting screw - MS1 or MS2 - for the material you will
be mounting to)

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Step 2:
If installing onto wood-studded drywall:
1. Place and level the second mounting crossbar (A2) on the wall exactly 55.245 cm
(21.75 in) (bottom of A1 to bottom of A2) below the top crossbar (A1). Use the spreader
bars (B1 & B2) to determine appropriate distance, as seen in Figure 2.
2. Ensure the holes of the second mounting crossbar (A2) line up with the markings
made in Step 1.
3. Once position is set, mount second crossbar (A2) to wall using the MS2 screws
provided, as seen in Figure 1. This will be the bottom crossbar of your wall mount.
If installing onto brick or concrete wall:
1. Drill holes into the wall over each marking made in Step 1, and place the anchor
portion of each of your mounting screws (MS1) in each hole.
2. Place and level the second mounting crossbar (A2) on the wall exactly 55.3 cm (21.75
in) (bottom of A1 to bottom of A2) below the top crossbar (A1). Use the spreader bars
(B1 & B2) to determine appropriate distance, as seen in Figure 2.
3. Ensure the holes of the second mounting crossbar (A2) line up with the drilled and
anchored holes.
4. Once position is set, mount second crossbar (A2) to wall using the MS2 screws
provided, as seen in Figure 1. This will be the bottom crossbar of your wall mount.
Fig. 2
(Spreader bars – B1 & B2 – are not weight-bearing, and are intended for alignment
purposes only)

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Step 3:
1. Once both top and bottom mounting crossbars (A1 & A2) are secured to your wall, set
your first spreader bar (B1) onto crossbars (A1 & A2). Assuming the crossbars (white)
were installed with the appropriate distance between them, the spreader bar (B1)
should set cleanly in place.
2. Secure first spreader bar (B1) onto crossbars (A1 & A2) with pan screws (PS) provided,
as seen in Figure 3.
3. Repeat this process for your second spreader bar (B2).
Fig. 3
(Image shows top of B2 and right side of A1)

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Step 4:
1. Attach rope handles (RH) to sides of RHINO using the flat top screws (FS) provided, as
seen in Figure 4.
Fig. 4
Step 5:
1. Using rope handles (RH) and supporting the front of the unit with your hand, set
RHINO onto mounting crossbars (A1 & A2), as seen in Figure 5. If crossbars are spaced
appropriately and level, RHINO should set cleanly onto the crossbars (A1 & A2).
Fig. 5
(NOTE: For safety, use at least 3 people when lifting and setting RHINO onto wall mount. 4+
people is recommended for maximum safety.)

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Step 6:
1. Connect the Ring Terminals of your Anderson SB175 to Ring Terminal Cable (SB) to
your power system.
2. With the RHINO now mounted on your wall, remove side panel of RHINO.
3. Connect Anderson SB175 end of Anderson SB175 to Ring Terminal Cable (SB) to
Anderson SB175 cable inside of the RHINO, as seen in Figure 6.
4. Reattach side panel of RHINO.
Fig. 6
5.4 Floor Stand
WARNING: Before installing your RHINOs onto the floor stand (FLS), make sure
the wheels are facing outward with the locking mechanism engaged. If wheels
are rotated inward, regardless of whether locking mechanism is engaged, there is a
greater risk of the floor stand (FLS) tipping over which could result in injury.
Step 1:
1. Attach rope handles (RH) to sides of the first RHINO unit using the flat top screws (FS)
provided, as seen in Figure 4.

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Step 2:
1. Set first RHINO onto one side of floor stand. The RHINO should set cleanly into the
cutout section of the white mounting bar on the inside the floor stand (FLS), as seen in
Figure 7.
Fig. 7
(NOTE: For safety, use at least 2 people when lifting and setting RHINO onto floor stand (FLS).
3+ people is recommended for maximum safety.)
Step 3:
1. Connect the Ring Terminals of your Anderson SB175 to Ring Terminal Cable (SB) to
your power system.
2. Remove side panel of RHINO.
3. Connect Anderson SB175 end of Anderson SB175 to Ring Terminal Cable (SB) to
Anderson SB175 cable inside of the RHINO, as seen in Figure 6.
4. Reattach side panel of RHINO.

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Step 4:
1. Repeat Steps 1 – 3 with your second RHINO. When finished, your RHINOs and floor
stand should resemble Figure 8.
Fig. 8
Step 5:
1. Once both RHINOs are set into place, set crossbar plates (CP) onto corresponding
screw holes on the top of the floor stand
2. Secure to floor stand with the flat top screws (FS) provided, as seen in Figure 9.
3. Once crossbars are secured, you may unlock wheels and move your RHINOs freely.
Fig. 9

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6. Battery Interface
6.1 Overview

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6.2 BMS Codes
Symbol
Category
Description
OVP
Voltage Protection
Over voltage protection by battery cell level
UVP
Voltage Protection
Under voltage protection by battery cell level
POVP
Voltage Protection
Whole pack over voltage protection
PUVP
Voltage Protection
Whole pack under voltage protection
COCP
Temperature Protection
Over temperature protection while charging
CUTP
Temperature Protection
Under temperature protection while charging
DOCP
Temperature Protection
Over temperature protection while discharging
DUTP
Temperature Protection
Under temperature protection while discharging
COTP
Current Protection
Over current protection while charging
SCP
Short Circuit
Short circuit protection
LOCK
Status
Lock status
NOMAL
Status
Normal status
7. Warranty & Returns
In the unlikely event you are having an issue with one of our batteries we have developed a
straightforward warranty & return policy which includes the following:
• For all returns or warranty claims contact [email protected].
• 30-day money back guarantee. Returns of undamaged batteries unrelated to warranty claims
may be issued full refunds less a 20% restocking fee.
• We have a 10-year warranty on all new batteries. For more information, visit the Policies page at
BigBattery.com.
• We offer a 30-day warranty on all cells, accessories & complimentary products (Anderson
connectors, wires, chargers, etc.).
• Warranty only applies to original owner (non-transferable).
• Warranties can be used for an exchange of a component only once per component.
• Operating the battery outside of acceptable parameters, according to our listed battery specs
(ref. Section 3.1) will void your warranty.
• Example: Using an incorrect charger may exceed max. charging voltage
specifications.
• WARNING: Make sure to use the appropriate charger for your battery.

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• Customer pays return shipping on returns or warrantied component inspections initiated after
the first 30 days of ownership. Please note some battery returns may require special
documentation and packaging, and these instances will encounter extra fees. This is to correctly
comply with lithium battery shipping regulations.
• If you have a quality issue with a product, please contact our support team to help properly
diagnose the problem. If the product you receive does not meet our rigorous quality standards,
then we will issue you a replacement component or fix the original at no additional cost.
Replacement batteries or components will only be sent after we have received your returned
battery or component and finished an inspection to determine the cause of any problems.
BigBattery is not responsible for return shipping.
• DIY modifications or damage due to gross negligence or abuse are not covered by the warranty.
For all returns, please mail your package in a traceable method to the address below. Include
a note with your name, your order number and describing your situation and/or request.
BigBattery Inc.
Technical Support Team
9667 Owensmouth Ave.
Chatsworth, California 91311

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