Table of Contents
1. UPS vs EnergonX 2. Advantages of LiFePO4 3. Which LiFePO4 battery should you choose? 4. Information - Chinese import batteries 5. Information - HeLi batteries
UPS vs EnergonX How is an EnergonX unit different from a classic uninterruptible power supply (UPS)? Based on its functions and construction, an EnergonX unit is not a classic uninterruptible power supply (UPS) in the traditional sense, but a mobile, modular, off-grid power source system designed for outdoor use. It can also provide backup power functionality, but it is far more versatile than a conventional UPS.
A classic UPS
Usually provides short-term power for 230 V AC consumers, such as a computer or server. Automatically switches on in the event of a power outage. A fixed, closed system, typically intended for indoor use.
EnergonX, by contrast
Can operate external 12 V DC devices and, optionally with an inverter, 230 V AC devices, even outdoors. It is not fixed-installed, but a portable, mobile unit. It is not only for backup power, but can also be used as an independent power source. It can be charged from several input sources: mains charger, solar panel or generator. It can be flexibly expanded and can accept several battery types. It can be expanded mechanically and electrically. It can be opened, so other items, such as personal belongings, can also be placed inside.
Advantages of LiFePO4 Advantages of LiFePO4 batteries For EnergonX units, we recommend LiFePO4 (lithium iron phosphate) batteries because they offer several advantages in terms of performance, safety and long-term reliability.
1
Long service life
A good quality LiFePO4 battery can withstand up to 3000-5000 charge cycles. This may mean 8-10 years of use under regular operation. Compared to lead-acid batteries, the service life can be 3-5 times longer.
2
Safe technology
It is not prone to overheating or ignition. Due to its stable chemical composition, it is not explosive under normal use. Protection against overcharging, deep discharge, overvoltage and short circuit.
3
Lightweight and compact
With the same capacity, it can be 50-60% lighter than a lead-acid battery. Compact size and easy installation.
4
High efficiency
It can be charged faster with lower energy loss. More stable discharge voltage and longer-lasting performance.
LiFePO4 (typical voltage behavior)
Nominal: 12.8-13.2 V Fully charged: approx. 13.4-13.6 V Stable around 13-12.8 V until about 90% discharge Drops below 12 V only in the last 10-15%
Lead-acid (AGM/gel)
Nominal: 12 V Fully charged: 12.6-12.8 V Continuous, linear voltage drop during discharge Performance loss can already be noticeable at 80%
In practice: with LiFePO4, motors, inverters and coolers operate more steadily, there is less power drop, and runtime is more predictable.
Property LiFePO4 Lead-acid
Voltage stability OK High (almost stable throughout)X Low (continuously decreases)
Performance during runtime OK Nearly constantX Gradually decreases
Usable capacity OK 90-95%X 50-60%
Device behavior OK Reliable and predictableX May be unstable
5
Environmentally friendlier choice
Does not contain heavy metals or toxic materials, such as lead or cobalt. Can be recycled. Low self-discharge means less frequent charging during storage.
Which type of LiFePO4 battery should you buy for an EnergonX unit? When purchasing, a common question is whether to choose a cheaper import battery or a more reliable domestic/European alternative. The following points can help with the decision.
Price
For imported batteries, shipping, customs/VAT and quality uncertainty may increase the final price. He-Li: higher starting price, but real support, reliable quality and longer-term warranty.
Quality + warranty
Import: varying cell quality/BMS, frequent capacity differences, difficult warranty handling. He-Li: tested cells, reliable BMS, domestic service, accurate monitoring (Bluetooth/LCD/app).
Recommendation: for critical applications and long-term use, HeLi is usually the better choice.
Information - good value Chinese import batteries The EnergonX unit is compatible only with batteries that physically fit inside the unit and match the main fuse system (80 A).
Recommended models (overview):
Manufacturer Type Size (mm) Capacity (Wh) Charging recommendation Connection Protection
RUSMR 12V 120Ah 260 x 171 x 206 1536 10-75A M8 screw terminal Built-in BMS
RUSMR 12V 150Ah 330 x 170 x 215 1920 20-75A M8 screw terminal Built-in BMS
LiitoKala 12V 100Ah 330 x 170 x 220 approx. 1280 10-75A M8 screw terminal Built-in BMS
LiitoKala 12V 150Ah 340 x 180 x 226 approx. 1920 Slower charging recommended M8 screw terminal Built-in BMS
Compatibility summary:
Model Size (mm) Capacity Charging current EnergonX compatibility
RUSMR 120Ah ~260 x 171 x 206 1536 Wh 10-75 A OK yes
RUSMR 150Ah ~330 x 170 x 215 1920 Wh 20-75 A OK yes
LiitoKala 100Ah 330 x 170 x 220 1280 Wh 10-75 A OK yes
LiitoKala 150Ah 340 x 180 x 226 1920 Wh 20-75 A OK yes
Information - HeLi batteries
Product description: HE-LI batteries (source: LiFePO4.hu)
HE-LI batteries are built from Grade A LiFePO4 cells and include a built-in BMS. Their parameters can be checked via Bluetooth, except for certain types. The typical charging/discharging temperature range is 0-55 °C (charging) and -20-55 °C (discharging).
The most commonly ordered types and their dimensions:
Type Available versions Nominal voltage / capacity Size (mm) Weight (kg) Stored energy (kWh)
3/A 12V/100Ah (105-108Ah) 12V / 100Ah (105-108Ah) 260 x 168 x 209 10-11 1.28
3/A 12V/120Ah or 24V/60Ah 12V / 120Ah 260 x 168 x 209 10-11 1.54
3/A 12V/130Ah 12V / 130Ah 260 x 168 x 209 10-11 1.66
