The amount of time your applications will run depends on the battery's energy (Wh) and the application's power. You can calculate it using this formula: Run Time (hours) = Battery energy (Wh) / power (W).

For example, If your load power is 100W and you have a 100Ah battery(1280Wh), the calculation would be: Run Time = 1280Ah / 100W= 12.8 hours, which is approximately 12 hour and 48 minutes.

So, with a 100Ah battery, your 100W application will run for about 12 hour and 48 minutes.

Redodo 12V 100Ah batteries have a maximum charge current of 100A. but we usually recommend charging the batteries at a charge multiplier of 0.2C, which is 20A.We do not recommend connecting batteries of different brands and models in series and parallel. Because each brand of the battery cell is different, the nominal voltage and capacity is not the same, it will lead to voltage imbalance, which will produce a potential safety hazard.

Two Redodo 12V 100Ah lithium batteries in parallel and a single Redodo 12V 200Ah battery battery have the same capacity. However using only one battery in the system will make for better consistency and more stable performance, and use less wire, and be smaller in size.

Redodo 12V 100Ah battery can support side placement, just make sure the back and top of the battery are not placed facing down.

The recommended operating temperature of our 12V 100Ah battery is:
Charge: 0℃ to 50℃ / 32℉ to 122℉
Discharge: -20℃ to 60℃ / -4℉ to 140℉
Storage: -10℃ to 50℃ / 14℉ to 122℉
The battery can be discharged at 32°F, but we do not recommend charging the battery.

We have the below models of Redodo 12V 100Ah batteries:
①Redodo standard 12V 100Ah
②Redodo 12V 100Ah mini
③Redodo 12V 100Ah SMART
④Redodo 12V 100Ah Group 24
⑤Redodo 12V 100Ah Low Temp
⑥Redodo 12V 100Ah Self-Heating

Redodo standard 12V 100Ah battery is made of prismatic cells, Redodo 12V 100Ah mini battery is made up of pouch cells, which are smaller and lighter than the standard 100Ah LiFePO4 battery.
Redodo 12V 100Ah smart battery with low-temperature charging cut-off function, also there is a one-touch button on the top that can switch turns and off easily.
Redodo 12V 100Ah Group 24 size battery is designed for RV users, the dimension is L10.24*W6.61*H8.3 inches which accordance with related regulations.
Redodo 12V 100Ah Low Temp batteries are suitable for cold weather. It has a cut-off function when the temperature is below 32°F.
Redodo 12V 100Ah Self-Heating battery has an automatic self-heating function. This feature makes it no problem to charge the battery at low temperatures.

However, the internal structure of these six types of batteries is different, but the capacity and power of these batteries are the same.

Hi, our 12V(12.8V) 100Ah LiFePO4 battery built-in 100A BMS, which could support 100A max. continuous charge/discharge current, 1280W max. load power, and 1280Wh max. energy. In general, the power of the inverter depends on the power of your load. Most of our customers will use 1000W PSW inverter for one of our 12V(12.8V) 100Ah LiFePO4 batteries. To help you analyze and optimize your battery system precisely, we welcome you to contact us at service@redodopower.com, and we will help you with an in-depth analysis according to your detailed information.

Hi, our 12V(12.8V) 100Ah LiFePO4 battery built-in 100A BMS, which could support 100A max. continuous charge/discharge current, 1280W max. load power, and 1280Wh max. energy. In general, the power of the inverter depends on your power of load. A 2200W PSW inverter will also work with one 12V(12.8V) 100Ah LiFePO4 battery, and it still has room to extend by adding batteries if there are more appliances in. However, it is still depends on the power of your load. To help you analyze and optimize your battery system precisely, we welcome you to contact us at service@redodopower.com, and we will help you with an in-depth analysis according to your detailed information. 

Hi, many of our customers use 2 of Redodo 12V(12.8V) 100Ah LiFePO4 batteries connecting in series for their 24V trolling motor, and it works well. But it is also depends on the power of the trolling motor. One of our Redodo 12V 100Ah LiFePO4 batteries could support 100A max. continuous charge/discharge current, 1280W max. load power, and 1280Wh max. energy. Connecting two of Redodo 12V 100Ah LiFePO4 batteries in series will build a 24V(25.6V) 100Ah battery system, which could support 100A max. continuous charge/discharge current, 2560W max. load power, and 2560Wh max. energy. To help you analyze and solve your question about the batteries more specifically, we welcome you to contact us on service@redodopower.com, and we will help you with an in-depth analysis according to your detailed information. 

Dear Customer, 1)Yes, 1 charger could works for 2pcs Redodo 12V(12.8V) 100Ah LiFePO4 batteries which connected in series. One 12V 100Ah LiFePO4 battery built-in 100A BMS, which could support 100A max. continuous charge/discharge current, 1280W max. continuous load power, and 1280Wh max. energy. Connected 2pcs of those 100Ah batteries in series will build a 24V(25.6V) 100Ah battery system, which could support 100A max. continuous charge/discharge current, 2560W max. continuous load power, and 2560Wh max. energy. Regarding the charger for the 24V 100Ah battery system, we recommend a dedicated LiFePO4 battery charger, the DC charging voltage should be between 28.4V~29.2V and charging current less than 100A (usually, we recommend the current of 0.2C, which means 20A, and it will take around 5hrs to fully charge the battery system). 2)Here are two steps are necessary in order to reduce the voltage difference between batteries before connection, and through these, the battery system can perform the best of it in series or/ and in parallel. Step① fully charge your batteries separately. Step② connect your batteries one by one in parallel, and leave them together for 12~24hrs. And then, you can connect your batteries in series or/ and in parallel to build your own battery system. BTW, for charging one 12V 100Ah LiFePO4 battery, we recommend a dedicated LiFePO4 battery charger, the DC charging voltage should be between 14.2V~14.6V and charging current less than 100A. To help you analyze and optimize your battery system precisely, we welcome you to contact us on service@redodopower.com, and we will help you with an in-depth analysis according to your detailed information. 

Hi, for safety reasons, we don’t suggest connecting 5 or 6 pieces of the Redodo 100Ah batteries in series. Our 12V 100Ah LiFePO4 battery supports up to 4 identical batteries for up to: 48V 100Ah battery system (in series) 12V 400Ah battery system (in parallel) And we recommend connecting MAX. 16pcs of Redodo 12V(12.8V) 100Ah LiFePO4 batteries in 4P 4S to build a 48V(51.2V) 400Ah battery system(“P” refers to parallel, “S” refers to series). To help you analyze and solve your question about the battery connections more specifically, we welcome you to contact us at service@redodopower.com, and we will help you with an in-depth analysis according to your detailed information. 

Hi, at the beginning, we had set up the low temperature cut-off function for Redodo 100Ah LiFePO4 battery, but later many customers responded that they also want to discharge it under 32°F/0°C. After careful research, our team has decided to block this function. Some of our customers who live in the cold areas who are happy to use our batteries too, because it can discharge well and their loads can work under low temperature. If they need to charge the battery below 32°F/0°C , they told us that they choose a dedicated LiFePO4 battery charger with a low-temp cut-off function, or take the batteries to the house where the temperature is higher than 32°F/0°C. We will have the LiFePO4 batteries that have low temperature protection in the near future. 

Hi, usually, you can leave LiFePO4 battery connected to charger after it has been fully charged for a while if your battery charger has automatic power off function. Redodo LiFePO4 battery also has over-charging protection too. But for the safety reasons, we suggest that disconnect the battery with the charger once it is full charged.

No, we do not suggest you to connect 12v 200ah battery to the battery system of 2*12V 100Ah battery. Although Redodo 12V 100Ah LiFePO4 battery and Redodo 12V 200Ah LiFePO4 battery have built-in 100A BMS, the capacities of two battery models are different. To connect in series or /and parallel, batteries should meet the below conditions: a. identical batteries with the same battery capacity (Ah) and BMS (A); b. from the same brand (as lithium battery from different brands has their special BMS); c. purchased in near time (within one month) So if you want to expand your battery system, we suggest you to add 2*12V 100Ah battery.

Hi, we do not recommend to connected the Redodo 12V 100Ah battery and 200Ah battery together. Here are two main reasons why we don't suggest connecting batteries with different capacities: 1) After parallel connection of batteries with different capacities, the current of 200Ah is twice as large as that of 100Ah when charging/discharging at the same time. 2) The internal resistance of the 200Ah battery is 2-4mΩ, and that of the 100Ah battery is 7-9mΩ. When the batteries with different impedances are connected in parallel, it is possible to damage BMS after long-term use. To connect in series or/ and in parallel, batteries should meet below conditions: a: the same battery capacity(Ah) and same BMS b: from same brand(as lithium battery from different brands has their special BMS) c: purchased in near time(within one month) d: from same types of battery

Hi, Yes, for Redodo 12V(12.8V) 100Ah LiFePO4 battery, you can connect 6 batteries to make a 3P2S (P refers to Parallel and S refers to Series) battery system of 24V(25.6V) 300Ah. One Redodo 12V 100Ah LiFePO4 battery built-in 100A BMS, which could support 100A max. continuous charge/discharge current, 1280W max. continuous load power, and has max. 1280Wh energy. The 3P2S battery system of 24V(25.6V) 300Ah could support 300A max. continuous charge/discharge current, 7680W max. continuous load power, and has max. 7680Wh energy.