1.2 KW Lithium battery can replace 200 Ah Tubular Lead Acid battery in the inverter/Solar Hybrid inverter or Solar PCU application. This article will discuss the pros and cons and provide detailed points about comparing these two batteries. The backup time, if calculated at 400 Watt or more on the 1.2 KW Lithium battery and the Tubular battery with a capacity of 200 Ah 12Volt, the Lithium battery is the clear winner as the tubular Lead Acid battery is c20 capacity and the Lithium is C1 capacity battery. The Lithium battery of 1.2KW will give a capacity of 1200 watts compared to the 200 Ah Tubular Lead Acid battery, which should give 2.4KW output. Still, because of C20 capacity, it’s unable to provide 2400 watts at any given load. At the 1000-watt load, the Lithium battery can give 1 hour and 10 minutes of backup, and the Tubular 200Ah might give 45 to 50 minutes.https://suvastika.com/lithium-battery-compared-to-tubular-battery/
If we want to run smaller loads like 200- 300 watts, then the Tubular battery of 200Ah will give more backup than the Lithium battery, and its life will also be close to 5 years. But if the load is more than 400 Watts, then the Lithium battery will give more backup compared to the Tubular battery of 200Ah, and life will be 7-10 years, and the Tubular Lead Acid battery of 400 Watt and above might not last more than three years.
The price of a Lithium LifePO4 battery of 1.2KW is Rs.18,000-20,000, and the price of a 200Ah battery is almost Rs.15,000-17,000/
Advantages of Lithium batteries
- High energy density: Lithium batteries come in 12 Kgs compared to the 65 Kgs of 200 Ah Tubular Lead Acid battery. Suppose we see the size of the one-tenth of the size of the tubular battery.
- Long lifespan: Lithium batteries have three times the life of the tubular lead Acid battery, which is a very important difference. Tubular batteries last 2-3 years, and lithium batteries will last 7 to 10 years if the charger is used, especially for the lithium battery chemistry LiFPO4. The Tubular battery also needs a special charger where the ATC should be built to increase the battery backup and life, which is missing most of the chargers available in the market.
- Fast charging: Lithium batteries can be charged in 2-3 hours, while tubular batteries can take up to 15 hours to charge as the Charger to charge the Tubular battery has to have a minimum 3-stage charging for better life and proper backup time.
- Charging Cost: the charging cost of a Tubular Lead Acid battery is 20%-30% more as the Lithium battery shuts off the charger once it’s charged, but the Tubular battery charger keeps drawing charging current even after 100% charging in the form of trickle charging.
- Capacity: Lithium battery of 1.2KW has more backup compared to 12V/200Ah Tubular battery of C20 capacity.
- BMS: The lithium battery comes with the battery Management System, which has complete control of the Lithium battery as the BMS has a lot of functions to perform for the safety and life of the lithium battery, like Equalization of each cell in the battery.
- Protections: The BMS in the lithium battery has the protection of high- and low-voltage batteries and overload and Short-circuit protection, which keeps the battery alive and protects it from any abuse, which is not possible in the tubular lead acid battery.
- Maintenance: Lithium batteries do not require any maintenance. Tubular Lead Acid batteries need consistent monitoring of water topping of proper distilled water from time to time and also need cleaning around the battery.
Which battery type is right for you?
Your best battery type will depend on your specific needs and budget. A lithium battery is a good choice if you want a battery with a long lifespan, fast charging, and deep discharge capability. However, a tubular battery may be a better option if you are on a budget or need a battery that can operate in extreme temperatures.https://suvastika.com/is-lithium-battery-good-for-inverter-ups/
Here is a table that summarizes the key differences between lithium batteries and tubular batteries:
|Characteristic||Lithium battery||Tubular battery|
|Maximum Load Capacity||up to 300Watt load||400 Watt Load and above|
|Lifespan||Ten years||2-3 years|
|Charging time||2-3 hours||15 hours|
|High Voltage, Low Voltage, Overload, Short circuit protection||yes||No|
|Equalization of battery cells||yes||NO|
|Size and Weight||weight is 12 Kgs, and size is very small compared to the Tubular battery||65Kgs|
Ultimately, the best way to decide which battery type is right for you is to consider your specific needs and budget.