EPOCH GC2-R-B4830 Golf Cart LifePO4 Lithium Battery User Manual

: June 13, 2024
: EPOCH

Table of Contents

GC2-R-B4830 Golf Cart LifePO4 Lithium Battery
Safety Information
Product Overview
Specifications
48 GOLF BATTERY CONNECTION DIAGRAM
Charging
Communications
Warranty
References
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User Manual
GC2-R-B4830

GC2-R-B4830 Golf Cart LifePO4 Lithium Battery

Thank You
Dear Valued Customer,
Thank you for choosing Epoch Batteries. We greatly appreciate your support. Our team works diligently behind the scenes to create advanced battery systems and provide top-notch service to our customers. Support and feedback from our customers along with the hard work and dedication of our staff allow us to deliver exceptional products, competitive prices, and an overall excellent experience. Thanks again for giving us your vote of confidence. We hope that you’ll enjoy using our products as much as we’ve enjoyed creating them. Please feel free to reach out to us anytime.
Sincerely,
Epoch Batteries
164 Andrew Drive, Suite 300
Stockbridge, GA 30281
www.epochbatteries.com
support@epochbatteries.com
888-501-1846

Safety Information

Precautions
Failure to follow these instructions / guidelines can result in property damage, personal injury, or worse. Please read the following information carefully before installation and keep available for future reference:

Do not use if any of the components (battery, cables, connections, charger, etc.) are damaged.
- If any of the components are damaged upon arrival, please contact vendor for product support.
Do not attempt to charge or discharge the battery in climates exceeding the specifications of the battery.
Do not connect the battery to any other batteries with different specifications or chemistry.
Do not place conductive materials near the battery terminals or connections.
- The area surrounding the battery should be kept clear from debris.
Do not operate the battery near fire or flammable / explosive materials.
Do not attempt to disassemble or modify the battery.
Do not leave batteries charging while unattended.
Do not overcharge or over-discharge the battery.
Do not float / trickle charge the battery.

Disclaimers

Buyer is responsible for any damages resulting from the mishandling or misuse of our products, and/or failure to follow the safety guidelines.
Mishandling and/or misuse of the products will void the warranty.

Disposal & Recycling

Ensure that batteries are disposed of properly, in accordance with laws and regulations in your area.
This product contains lithium ion batteries and other recyclable materials.
We strongly encourage our customers to recycle retired batteries.
- Please feel free to contact us for more information regarding how to do so.

EPOCH GC2 R B4830 Golf Cart LifePO4 Lithium Battery -
Recycle

Product Overview

Key Features

Lithium Iron Phosphate (LiFePO₄) chemistry provides exceptional stability and consistent performance.
Advanced Battery Management System (BMS) provides safety features and protections.
Heat dissipation and pressure release for high current charging and discharging.
IP67 Rated for dust and water resistance. UL94 Grade V-0 fireproof.
Constant voltage and full usable capacity at any state of charge.

External Features

EPOCH GC2 R B4830 Golf Cart LifePO4 Lithium Battery -
Features

Positive Terminals
Pressure Release
CANbus Connection 1
LED Status Display
CANbus Connection 2
Negative Terminals

Battery Gauge

System Voltage
Current
Capacity

Specifications

Rated Voltage	51.2V	Size	260180272mm (10.2” x 7.1” x 10.7”)
Rated Capacity	30Ah	Communications	CAN/RS485
Standard Charging Voltage	55.2V~57.6V	Weight	~15.5 kg (34.17 lbs)
Max Continuous Charging Current	30A	Working Temperature (Low / High)

48 GOLF BATTERY CONNECTION DIAGRAM

EPOCH GC2 R B4830 Golf Cart LifePO4 Lithium Battery - Connection
Diagram

Charging

Note: The batteries should be powered on while charging.
Charging with AC-DC Battery Charger
Check the AC-DC battery charger you intend to use has a dedicated lithium charge setting that meets the above charging requirements. A lot of battery chargers are designed for charging lead-acid batteries only and may not have a suitable charge setting for lithium.
Charging Specifications

Model| Max Charge Voltage| Cut-off Voltage| Maximum C Rate| Recommended C Rate| Temperature
---|---|---|---|---|---
48V| 57.6V| 40V| 1C| 0.3C| Charge:| 0~45°C (32~113°F)
Discharge:| -20~65°C (-4~149°F)

LED Charging Indicator
Each battery has pair of LED indicators (as seen on External Features, page 4). While charging, a green LED will illuminate intermittently to indicate the state of charge (SOC) of the battery:

SOC	Lighting mode
< 20%	On: 0.3s – Off: 0.7s
20% – 90%	On: 1s – Off: 1s
> 90%	Constant

Communications

CANbus
Each battery has 2 communication ports. These ports utilize the CANbus (Controller Area Network bus) protocol. CANbus improves the efficiency, reliability, and safety of the system, and it is also responsible for the SOC gauge. In the box with the battery meter, there is also a 120ohm resistor that is used as a terminator. This is to be installed on the battery opposite of the gauge, as demonstrated in the image below. The gauge itself can be powered by the same battery it is connected to.

EPOCH GC2 R B4830 Golf Cart LifePO4 Lithium Battery -
Communications

Fault Codes
The Battery Management System (BMS) protects the battery and ensures optimal performance. If the BMS activates protection, a red LED will illuminate on the battery and a message will be displayed on the gauge to indicate the cause. The following is a list of codes that may be displayed:

Code	Description
Alarm 1	Cell high voltage
Alarm 2	Cell low voltage
Alarm 3	System high voltage
Alarm 4	System low voltage
Alarm 5	Large voltage difference between cells
Alarm 6	Over-current (discharge)
Alarm 7	Over-current (charge)
Alarm 8	High temperature
Alarm 9	Low temperature
Alarm 10	Large temperature difference
Err	Abnormal communication

Warranty

Registration
Product(s) must be registered at https://www.epochbatteries.com/pages /product-registration within 60 days of purchase to receive full warranty coverage. Any Epoch Batteries system not registered within 60 days from date of purchase shall be covered by the conditions of our warranty policy for a period of one (1) year from date of purchase. This warranty is extended to the original purchaser only and is non-transferable.
Exclusions

Damage due to being unsecured or insufficiently secured
Improper installation, use, maintenance, or service
Loose battery terminal connections
More than 4 batteries connected in series (above 48V)
More than 4 batteries connected in parallel
Reverse polarity connections
Inappropriate storage conditions as defined by Battery Owner’s Manual including but not limited to, exposure to extreme ambient temperatures above 140°F or below -40°F, fire, or water submersion, and/or storing Battery in a completely discharged state
Any short circuit caused by accidental, intentional, or inadvertent connection of the positive and negative terminals
Damage caused by impact, accident, collision, or drop
Under/over charging the Battery as defined in its respective Battery Owner’s Manual
Use with other third-party product(s) which fail
High resistance as a result of corroded terminals, poor crimps, or insufficient cable size
Battery that fails as a result of a faulty electrical system
Battery that has been opened, modified or tampered with in any way.
Battery that was used for applications other than which it was designed and intended for, including repeated engine starting, or drawing more amps then the battery is rated to continually discharge in its respective specifications
Battery that has not been charged for over 1 year (batteries need to be charged periodically to maintain Battery cell health)
Battery that has been used in a commercial application where it is cycled to more than 80% depth of discharge repeatedly within 24 hour periods.