MAGIRA GUARDA Li100 LiFePO4 Lithium Battery Instruction Manual

: June 5, 2024
: MAGIRA

Table of Contents

MAGIRA GUARDA Li100 LiFePO4 Lithium Battery
Charging
References
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MAGIRA GUARDA Li100 LiFePO4 Lithium Battery

MAGIRA GUARDA Li100 LiFePO4
Lithium Battery

Important Safety Information

Please read these operating instructions carefully before the initial operation and keep them in a safe place. If you hand over your LiFePO4 Battery (hereinafter referred to as „battery“), please also hand over these operating instructions
The manufacturer is not liable for damage caused by improper use or incorrect operation.
This is a warning sign. It is used to warn of the possible danger of injury. Observe all safety instructions with this icon to avoid possible injury or death.
You will find the complete operating instruction and updates for your product at www.magira.eu
Warnings in these operating instructions are classified as follows for better differentiation:

Indicates a hazardous situation that, if not avoided, could result in death or serious injury
Indicates a hazardous situation that, if not avoided, may result in minor or moderate injury
Indicates a hazardous situation that, if not avoided, may result in damage to property or damage to the device

WARNING
Please observe the safety instructions. If you have any questions, please contact our customer center.
You can find the telephone number on the back.

Safety Instructions

If these safety instructions are not observed, there is a risk of serious injury or even death!

Work on the battery should only be made by qualified service staff only
The battery connections are always under-voltage. Never place tools or objects on the battery. Avoid short circuits, deep discharges or excessive charging currents
Only use insulated tools when working on the battery
In case of fire, use a class D fire extinguisher, foam, or CO2 fire extinguisher
If a battery is discharged too deeply, it is damaged and can become dangerous. Avoid a deep discharge by silent consumers by installing a safety relay or an isolating switch
Never try to open the battery. The securely packed electrolyte of the cells is corrosive. If the battery casing is damaged, dispose of the battery according to the instructions
If a battery is recharged after a deep discharge or over-charge, a harmful gas mixture such as phosphate may be secreted in the cells. Never open the battery. If the battery casing is damaged, dispose of the battery according to the regulations
LiFePO4 batteries are lighter than conventional lead-acid or gel batteries, but if they are not properly secured they can still become a projectile in an accident

Transport Information

The battery is tested according to the UN Manual of Tests and Criteria, Part III, subsection 38.3 (ST/SG/AC.10/11/version 5). For transport, the batteries belong to category UN3480, Class 9, packing group II and during transport, these regulations must be complied with.
This means that for transport by land or sea (ADR, RID & IMDG) they must be packed according to packing instruction P903 and for air transport (IATA) according to Packaging Instructions P965.
The original packaging meets these requirements.

Battery Management System (BMS)

Overload protection
Deep discharge protection
Overvoltage protection
Active cell balancing
Charge control
Temperature protection of the cells
Temperature protection of the BMS
Short circuit protection

Overload Protection
The BMS switches off the battery outputs in case of overload to protect the cells.
The battery has no voltage at this time, after the consumer is finished the battery unlocks itself.

Deep Discharge Protection

Each cell is individually monitored for deep discharge. If this results in the battery outputs being switched off, they can only be released again by a charging process.
The BMS protects the cells from deep discharge during active use. However, a switched-off, the empty battery can damage itself over a longer period of time due to the low but existing self-discharge of 3% / month!
Even small consumers such as alarm systems, relays, stand-by systems or similar consume capacity and discharge your battery. If the battery is not used for a long time, make sure that it is disconnected from the system by disconnecting the plus pole.
Tip: A battery that has been completely discharged should be charged as soon as possible!

Overvoltage Protection

LiFePO4 battery cells must not be charged above 3.65V/cell and 12.8V/battery, otherwise the cells will be destroyed by overvoltage.
Only suitable chargers with an end-of-charge voltage of 12.8V may be used to charge the batteries.
The BMS protects the cell against overcharging, but must itself take the power and burn. This is possible for a short time, but not a permanent state.
A permanently too high charging voltage above 12.8V can damage the BMS!

Active Cell Balancing

The so-called balancing ensures that each individual cell is charged to the maximum final charge voltage of 3.6V/cell. This is important when the battery capacity is maximally re-moved. If the cells are completely empty, they can drive a little and become uneven.
As a result, the battery would have less and less capacity over time. The built-in active balancer, which adjusts the cells at any time, can help here. The active balancer ensures maxi-mum efficiency regardless of the battery‘s state of charge.

Charge Control

The BMS controls all parameters of a reliable and safe load at all times. If problems appear, the charge is blocked by switching off the battery outputs to protect the battery.

Temperature Protection of the Cells

All LiFePO4 cells in the battery are individually controlled by a temperature sensor at all times.
If the battery switches off because the cells have reached temperatures above 70 °C, they must first cool down again until the BMS releases the output again.
Do not draw power or charge the battery for 30 minutes!

Temperature Protection of the BMS

The BMS itself is also permanently monitored by a temperature sensor. If the BMS reaches a temperature of 95 °C, the battery outputs are switched off.
Only after cooling down can the output be released again.
Do not draw power or charge the battery for 30 minutes!

Short Circuit Protection

In case of a short circuit, our BMS protects the battery from destruction and switches off the battery outputs.
When the short-circuit is removed, the battery is automatically switched on again, unless the temperature protection is active.
Do not draw power or charge the battery for 30 minutes!

Installation

Never use a damaged battery!
Pay attention to the correct polarity when connecting!

Mounting
Ensure that the battery is adequately secured with a retaining strap or mounting bracket. The LiFePO4 battery can be mounted in any position unless specifically specified.

Connection The battery has M8 connection poles (internal thread) for screws or can be optionally converted to automotive SAE cones.
Already use a backup in your system, it must be adapted to the performance of the battery!

Parallel Connection

Any number of MAGIRA® batteries of the same brand, type, age, capacity, and state of charge can be connected in parallel to increase the capacity.

Make absolutely sure that the connection is correct: Ensure an even load distribution!
Each individual battery must be fully charged before the first installation!

MAGIRA GUARDA Li100 LiFePO4 Lithium Battery fig-3

Serial Connection

A maximum of 4 batteries (48V) of the same brand, type, age, capacity, and state of charge can be connected in parallel in series to increase the output voltage.

Make absolutely sure that the connection is correct: to Ensure an even load distribution!
Each individual battery must be fully charged before the first installation!

Charging

ATTENTION

Only use chargers suitable for LiFePO4 cells with a final charge voltage according to the MAGIRA® battery datasheet!
Even simple lead, gel, acid, and AGM battery chargers can damage the battery when first connected!
Observe the maximum charging current of your battery, this must not be exceeded at any time!
Stop the charging process when the BMS interrupts the charging process and check the battery and the charging parameters!
Disconnect the charger if it is not used for a longer period of time!
Only use LiFePO4 chargers approved or released by MAGIRA® to ensure the service life of your battery!
Charge your battery as quickly as possible at a low state of charge of approx. 20% or after disconnection due to under-voltage to ensure maximum service life!
Charge your battery before use!

At delivery, MAGIRA® batteries are charged between approx. 40% and 80%.
We therefore always recommend that a new battery be fully charged before use.
Please observe our instructions for parallel or serial connections of the batteries!

Charging at Low Temperatures

Even charging at low temperatures is controlled by our BMS. The normal charging range is from 0 °C to +60 °C. Here the battery takes up the complete charging current. If the temperature is outside this range, the charging current is reduced so that the battery can either slowly warm-up or cool down. The charging process is thus extended.

Review

Check your connection cables and contacts regularly for tightness, deformation, cracks or damage!
Check the battery housing for damage. A damaged battery is not allowed to be charged and must be checked by MAGIRA®!
If the running or charging time changes very much in relation to the original condition, the battery should be checked or replaced due to the operating age!
The self-discharge of the battery is very low (1-3%/month) when the battery is not in use and is stored
Consider replacing the battery with a new one if any of the following occurs:
- Battery life drops to less than 80% of the original runtime
- The charging time of the battery increases considerably

Cleaning

If cleaning is necessary, use a soft damp cloth without chemical additives! Otherwise, the dust- and waterproof housing is maintenance-free.

Storage/Wintering

Extend the life of your battery by following these instructions:

Charge your battery to 100% of its capacity before storage
Disconnect your battery from all loads and consumers before storing
Protect the pole contacts against short circuits by covers
If the battery is stored for a longer period of time, it must be recharged to 100% every year!
Temperatures down to –20 °C do not damage the battery cell, so in most cases, it is not necessary to remove the battery. In general, care should be taken to ensure that very cold batteries are slowly adapted to the ambient temperature again! Rapid heating can lead to condensation inside the housing and damage the battery
Never use a trickle charger!

Guarantee/Warranty

MAGIRA® products are manufactured according to the strictest quality criteria and MAGIRA® guarantees that the LiFePO4 batteries are delivered in perfect condition.
MAGIRA® provides the statutory warranty for production and material defects that were present at the time of delivery of the product. MAGIRA® is not liable for typical signs of wear and tear. The warranty does not apply to defects that are due to natural wear and tear improper use, or lack of maintenance.
Any use of the product follows at your own risk.
A warranty claim can only be accepted if a copy of the purchase receipt is enclosed when the product is sent in. The warranty does not exceed the value of the product in any case.
By putting the product into operation, you accept the above conditions and assume full responsibility for the use of this product. The values given by MAGIRA® regarding weight, size or others are to be understood as a guideline.
MAGIRA® assumes no formal obligation for such values, or specific data, as technical changes made in the interest of the product may result in different values.

Disposal

The recycling of batteries is encouraged
Batteries marked with the recycling symbol must be returned to approved recycling centers
They can also be returned to the manufacturer by arrangement
Dispose of discharged batteries only!
Insulate the pole connections from short circuits!
Batteries must not be disposed of in the domestic or industrial waste
LiFePO4 iron phosphate batteries are subject to disposal and recycling regulations that vary by country and region

Reclamation

Should it happen that you would like to send a battery back to us, please note the following information for quick handling:

If possible, use the original packaging as a shipping carton.
If you no longer have the original packaging, please use suitable (UN-certified) packaging to ensure adequate protection against transport damage
If the goods are not shipped in the original packaging or an UN-certified packaging, the goods are considered damaged and will be invoiced when the article is returned.

Please enclose the following with the return shipment: