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USER GUIDELINE
LITHIUM IRON PHOSPHATE BATTERY
DO NOT touch any terminals
or connectors to avoid electric
shock.
ALWAYS wear protective
clothing and eyeglasses while
working with the Lithium Iron
Phosphate Battery.
Any uncovered battery
material such as electrolyte or
powder on the skin or in the
eyes must be flushed out with
plenty of clean water
immediately. Seek medical
attention afterwards. Spillages
on clothing should be rinsed
out with water.
Terminals of the Lithium Iron
Phosphate Battery are always
live. DO NOT place tools on
them. DO NOT short circuit or
use outside of the specified
electrical ratings.
Safety Precautions
• Please use circuit breakers, fuses, or disconnects that are appropriately sized by certified electricians,
licensed installers, or regional code authorities to protect all the electrical equipment in your system. The
battery contains a battery management system (BMS) that protects the battery cells from over-charge,
over-discharge, and over-current, however this alone will not protect your system from severe electrical
conditions.
• Please verify the polarity before connecting wiring. Reverse polarity can and will destroy the battery.
• DO NOT short-circuit the battery terminals. Doing so can cause bursts in amperage and lead to irreversible
damage to the system and the battery (and possibly cause an explosion).
• Please wear proper personal protective equipment when working on the battery.
• DO NOT string batteries in series. Doing so can cause catastrophic failure.
• Please ONLY connect identical batteries in parallel to ensure the best battery performance.
• If the battery shuts off due to low state of charge, please disconnect the battery from your equipment to
eliminate parasitic loads and charge the battery as soon as possible.
• It is highly recommended to pair the battery with low voltage disconnect devices in the system setup.
Battery Installation
Safe and reliable installation requires trained and certified technicians. This section can only serve as a
guideline as all scenarios cannot be covered.
• Wear protective clothing and eyeglasses
• Size the battery cables appropriately
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Battery Operation
Battery Storage
Battery Management System (BMS)
Battery Specifications
Use high stranded copper and heavy gauge cables to handle possible loads from the battery. Make sure to
maintain identical cable lengths.
• Verify correct polarity
Reverse polarity can and will destroy the battery. Use a multimeter to determine proper polarity.
• Tighten the cable connections
Over-tightening cable connections can cause terminal breakage and loose cable connections can cause
terminal meltdown or fire.
• Place the battery in a well-ventilated area
• Depending on shipping times and the time since manufacture, the battery may be received at a partial state
of charge. Please fully charge the battery prior to the first use.
• Standard charging consists of charging at 0.2C constant current until the battery reaches 14.6V. The
battery is then charged at a constant voltage of 14.6V while tapering the charging current. Charging is
considered complete when the charging current has tapered to 0.02C. Safe charging requires
temperatures between 0℃ and 45℃ (32℉ and 113℉) and takes approximately 7 hours.
• For standard discharging, the battery is discharged at 0.2C constant current until the battery reaches 10V.
Safe discharging requires temperatures between -20℃ and 60℃ (-4℉ and 140℉).
• Please charge the battery to 30%~50% and store the battery in an open, well-ventilated, dry, clean area
with temperatures of around 23℃ (73.4℉).
• Long periods of storage can deteriorate the battery performance. It is recommended to charge the battery
at least once every three months to prevent over-discharge.
The BMS will protect and shut the battery down when it is over-discharged or short circuited. In these rare
cases, the battery will show 0V voltage. Please activate the battery using an external charging source that has
lithium battery activation function. Please contact our Tech Support team at (909)287-7111 for more
information about the BMS.
Model
RNG-BATT-
LFP-12-50
RNG-BATT-
LFP-12-100
RNG-BATT-
LFP-12-170
Electric
Characteristics
Nominal Voltage
12.8V
Rated Capacity (0.2C)
50Ah
100Ah
170Ah
Renogy | www.renogy.com | techsupport@renogy.com | T: 909-287-7111 | F: 888-543-1164
Minimal Rated Capacity (0.2C)
47.5Ah
95Ah
161.5Ah
Energy
640Wh
1280Wh
2176Wh
Specific Energy
95.5Wh/kg
100.4Wh/kg
103.6Wh/kg
Energy Density
114.4Wh/L
126.7Wh/L
149.1Wh/L
Internal Resistance
≤50mΩ
≤30mΩ
≤10mΩ
Cycle Life (0.2C, 20±5℃)
2000 Cycles @ 80% DOD
Charging
Parameters
Charge Voltage
14.4±0.2V
Maximum Charge Current
50A
85A
Charge Cut-off Voltage
14.6V
Discharging
Parameters
Maximum Continuous Discharge
Current
50A
100A
125A
Discharge Cut-off Voltage
≥10V
Temperature
Parameters
Operation
Temperature
Range (60±25%
R.H.)
Charge
0~45℃ / 32~113℉
Discharge
-20~60℃ / -4~140℉
Recommended
23±5℃ / 73.4±9℉
Storage
Temperature
Range (60±25%
R.H.)
Less Than 1
Year
0~25℃ / 32~77℉
Less Than 3
Months
-5~35℃ / 23~95℉
-10~35℃ / 14~95℉
Mechanical
Properties
Dimensions
Length
197 mm / 7.8
inch
260 mm / 10.2
inch
Width
166 mm / 6.5
inch
158 mm / 6.2
inch
155 mm / 6.1
inch
Height
171 mm / 6.7
inch
246 mm / 9.7
inch
270 mm / 10.6
inch
Weight
6.7 kg / 14.7
lbs.
12.75 kg /
28.1 lbs.
22 kg / 48.5
lbs.
Housing Material
ABS+PC
347 mm / 13.7
inch
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Terminal Model
Assembly Method
4S15P
4S30P
4S53P
Protection Circuit Module (PCM) Specifications
Over-charge
Protection
Protection Voltage
3.9±0.05V/Cell
Recovery Voltage
3.6±0.05V/Cell
Over-discharge
Protection
Protection Voltage
2.0±0.05V/Cell
Recovery Voltage
2.4±0.05V/Cell
Overcurrent
Protection
Protection Current
160A
Delay Time
5~13ms
Recovery Mechanism
Disconnect Load
Short-circuit
Protection
Protection Mechanism
External Short-circuit
Recovery Mechanism
Disconnect Load
M8x0.75x14mm
M8x1.25x12mm
M12x1.75x16mm
