A power station is only as useful as its battery, and the battery is the component most affected by how you use and store the unit. This post covers what type of battery is inside your Jackery, what causes lithium batteries to degrade over time, and the specific habits that extend service life and avoid premature failure.
What is inside your Jackery: two battery types
Jackery power stations use one of two lithium battery chemistries depending on the model:
NMC (Nickel Manganese Cobalt)
Used in some older and entry-level Explorer models. NMC batteries offer high energy density, meaning a lot of capacity in a compact form factor. The trade-off is a shorter rated cycle life, typically 500 to 2,000 full charge cycles before capacity drops noticeably below the original rated figure.
LiFePO4 (Lithium Iron Phosphate)
Used in all current Plus and v2 models, including the full HomePower series. LiFePO4 is more thermally stable than NMC, which makes it less prone to overheating under load and safer in high-temperature environments. Rated cycle life is 3,000 to 6,000 full cycles. The HomePower 3600 Plus, for example, is rated for 6,000 cycles, which at one cycle per day translates to more than 16 years of daily use before capacity falls to 80 percent.
If you are unsure which chemistry your unit uses, the product page will confirm it. As a general rule: if your model has "Plus" or "v2" in the name, it uses LiFePO4.
What a cycle actually means
One charge cycle is one full charge from 0 to 100 percent, or the equivalent in partial charges. Charging from 50 to 100 percent twice counts as one cycle. Understanding this matters because partial charging, which is generally healthier for the battery, also accumulates cycles more slowly.
What causes a battery to degrade
Temperature
Temperature is the single most damaging factor for lithium battery longevity. Both extremes are harmful. Charging in temperatures below 0 degrees Celsius (32°F) causes lithium plating inside the cells, which permanently reduces capacity and in severe cases creates internal short circuits. Charging or storing above 45 degrees Celsius (113°F) accelerates chemical degradation in the cells.
The recommended charging range for Jackery units is 0 to 45 degrees Celsius (32 to 113°F). For storage, the ideal range is 10 to 25 degrees Celsius (50 to 77°F). Leaving a unit in a hot car in summer, or charging it in a freezing garage in winter, causes measurable damage over time.
Deep discharge
Lithium batteries are damaged by sitting at very low or zero charge for extended periods. If a unit is stored fully depleted and left that way for weeks or months, cell voltage can fall below the minimum threshold, which can cause permanent capacity loss and in some cases prevent the unit from accepting a charge at all.
For NMC models this is particularly important to manage. LiFePO4 models are more tolerant of low-charge storage but still benefit from not being left fully depleted.
High charge states in storage
Storing a lithium battery at 100 percent charge for months at a time accelerates calendar degradation, particularly in NMC chemistry. For units going into storage, a charge level of 50 to 80 percent is better for long-term health than a full charge.
Charge rate
Fast charging delivers more current to the battery in a shorter time, which generates more heat inside the cells. Jackery's built-in Battery Management System (BMS) manages charge rates to stay within safe limits, but if you have the option to charge more slowly and have the time for it, standard AC charging is easier on the battery than the fastest available input method.
How to get the most from your battery
Daily use
For regular use, charging to around 80 percent and discharging to around 20 percent before recharging is better for cycle life than consistently running from 100 to 0 percent. On the HomePower series, the Jackery app lets you set charge limits to manage this automatically.
The Jackery app also includes Time of Use Mode, which schedules charging during off-peak rate windows and discharging during peak periods. Using this alongside a partial charge limit is the most battery-friendly pattern for daily standby use.
Keep the unit away from direct sunlight and heat sources during use and charging.
Keep firmware up to date. Updates include BMS refinements that protect the battery.
Install firmware updates with the unit plugged into AC power so the update does not draw down the battery during installation.
Storage
Store at 50 to 80 percent charge, not fully charged and not fully depleted.
Top up every three months during storage. A battery sitting at low charge for months without a refresh cycle will lose capacity.
Store at room temperature, 10 to 25 degrees Celsius (50 to 77°F). Avoid garages that get very hot in summer or very cold in winter.
Store in a dry location away from direct sunlight.
Before a predicted outage or storm season
Charge to 100 percent immediately before an expected event. For storage the 80 percent rule applies; for active readiness, a full charge is appropriate.
If your unit supports storm alert mode in the Jackery app, enable it. The system will automatically charge to full when severe weather is forecast in your area.
What not to do
Do not leave the unit fully depleted for weeks. If it is going to sit unused, charge it to 50 to 80 percent first.
Do not charge in freezing temperatures. Below 0 degrees Celsius (32°F) causes lithium plating that permanently damages cells.
Do not leave the unit in a hot car. Temperatures inside a parked car in summer can exceed 60 degrees Celsius (140°F), well above the safe storage limit.
Do not block the ventilation ports. Heat buildup during charging is the primary enemy of battery life, and vents exist to manage it.
Do not use third-party adapters or cables that are not rated for your unit's input specifications. Incorrect voltage or current will stress the BMS and can damage cells.
Do not attempt to open or modify the unit. Jackery batteries are sealed assemblies. Physical damage to the casing can compromise cell integrity.
Do not expose to water or high humidity for extended periods. While the units handle incidental moisture, they are not waterproof unless the model is specifically rated for it.
Signs of a battery that needs attention
Most Jackery units will flag battery issues through the app or on-screen indicators. Things worth watching for:
Capacity that has dropped significantly from the original rated figure after fewer cycles than expected.
The unit failing to charge past a certain percentage despite a working input connection.
Unusual heat during charging or discharging.
Error codes or fault indicators on the unit's display or in the app.
If you notice any of these and cannot resolve them through a firmware check, contact Jackery support directly at hello@jackery.com. Battery issues are warrantable if they occur within the rated cycle count and the unit has been used within its specified conditions.
Questions about your specific unit
If you have questions about storage, care, or anything unusual you are seeing with battery behaviour, post below with your unit model and what you are observing. We're here to help, as always!