All batteries have a lifetime holding capacity for a finite amount of energy. Lithium batteries just happen to be 5 to 10 times that of cheap lead acid batteries. Lithium batteries are perceived to cost too much.If you put an AMPS Lithium 105Ah Group 31 battery next to a Lifeline AGM Group 31 battery, they look a lot alike. That is where similarities end.
It takes (1) of AMPS. The BMS allows the battery to be discharged 100% without damage.
A total energy of 630 usable watts. 50% is the maximum recommended discharge for lead acid batteries without damage. 105 usable Ah and total energy of. The Lifeline Group 31 battery will last a maximum of 1000 cycles (generally less) which means that the battery will need to be replace 3 times (or more) of the same life as a lithium. That is moving a lot of batteries.
Lithium batteries maintain a higher constant voltage until 85-95% discharged. A 12.8 nominal voltage means that you will see 12.8 volts to 13 volts throughout most of the discharge curve.
At 80% discharged, the voltage will be 12.6 volts or higher. At the maximum recommended discharge, AGM and flooded lead acid batteries show 12.2 volts or less and drop from there. The lower the voltage of the battery, the more amps it takes to run a device. Devices run hotter and less efficiently at lower voltages. AMPS lithium battery can be discharged 100% without damage.
Of Lifeline GPL-31T AGM batteries = 210 Ah. Of Lifeline GPL-31T AGM battery = 105 Ah. 50% is the maximum recommended discharge. For AGM / lead acid batteries per Lifeline AGM lead acid tech manual. (1) AMPS Group 31 105AH Lithium battery.
(1) Lifeline GPL-31T AGM battery. (2) Lifeline GPL-31T AGM batteries. Lithium batteries are hassle free. Lithium batteries do not vent gas and can be kept in sealed environments.
AGM lead acid batteries need to be brought to 100% charge, preferably on a daily basis. Allowing to be in a partially charged state for any length of time will cause sulfation crystallization which will prematurely reduce the capacity and cycle life. AGM batteries are VLRA (valve regulated lead acid) and can vent explosive hydrogen gas when charged. Need to be brought to 100% charge and equalized on a regular basis to prevent sulfation crystals and electrolyte stratification and premature loss of capacity and cycle life.
Water levels in the cells must be maintained. Will vent explosive gas when charged or equalized.
And AGM lead acid batteries is the primary reason for premature loss of capacity and cycle life. R lithium battery with a nominal 12.8 v olts (100% discharge) has 105 usable amps and provides 1344 usable watts. The BMS allows the lithium battery to be safely discharged 100%. An AMPS 105 amp hour. With a nominal 12.8 v olts.At 80% discharge provides 1075 usable watts. At 100% discharge provides 1344 usable watts. An AGM or flooded lead acid 105 amp hour battery. With a nominal 12 volts. At recommended max 50% discharge has 52.5 usable amps and provides usable 630 watts.
50% is the maximum recommended discharge for AGM / lead acid batteries. 105 Ah with 12V nominal voltage is not the same as 12V 105 Ah with 12.8V nominal voltage.Both will work just fine in a 12 volt system. Nominal voltage is the average output voltage of the battery.
The formula used to determine watts is watts = amp hour x nominal voltage. Voltage stays at 13.2 to to 12.8 volts throughout discharge cycle (up to 80% discharge) means more power! Equipment, motors, pumps, refrigeration, etc. 100 Amp BMS means battery is capable of taking a 100 amp charge or discharge.This is important because most alternators can produce 80 to 100 amps when charging. AMPS 105 Ah battery can be discharged up to 100% which means you can safely use 105 amp hours of energy. Lead acid batteries should not be discharged below 50% or it will significantly reduce the life expectancy which means that a 105 Ah AGM lead acid battery has only 52.5 usable Amp Hours! Group 31 105AH Lithium battery weighs 31 lbs. Lithium batteries have a 99% charging efficiency.
Every amp that goes in is stored. The BMS allows constant voltage and constant current. Constant voltage is up to 14.6 volts. Constant current is the incoming amps, the recommended current for AMPS 105 Ah lithium battery is 30 amps. The BMS monitors the charge cycle and cuts of the charge when the battery is full.
The BMS prevents over charging. A fully discharged AMPS 105 Ah lithium battery can be fully charged at 30 amps in under 4 hours!
AGM / lead acid batteries have a charge efficiency of 85% which decreases as the battery ages. 15% of the charging amps is lost to the chemical conversion and hydrogen gas production. AGM / lead acid batteries have an initial high amp bulk charge for the first 80% of battery Ah capacity and then throttles down the absorption stage amp input for the last 20% of the battery Ah capacity. This means that the battery will take a long time to fully charge.
Imagine going to bed with 13 volts and waking up with 13 volts after running the freezer all night. Imagine not having to run a generator to charge up the battery bank, daily, weekly or maybe ever. Imagine never having to move a battery ever again. Imagine really being able to rely on just solar and wind to keep the battery charged.
Imagine having the same amount of energy in ½ the space and ½ the weight. Imagine have twice the power in the same amount of space. What is peace of mind worth? Some offers are battery cells only - you need a BMS (battery management system) to protect the cells from excessive charge/discharge which will damage them.
You need a quality BMS that will handle the maximum combined load of all that stuff you turn on. A good quality BMS will handle periodic excessive loads but it will stress the BMS and potentially causing eventual BMS failure. The BMS determines the charge/discharge capacity of a battery. A lithium battery with a 50 amp BMS has a maximum charge/discharge of 50 amps. A 100 amp BMS has a maximum charge/discharge of 100 amps and so on.
Most heavy duty alternator and charging systems found in vehicles and boats will exceed 50 amps. AMPS Lithium Iron Phosphate batteries provide a quality, built-in BMS. Simply, a 12 volt nominal is a battery that has an average discharge voltage of 12 volts. Lead acid batteries are nominal 12 volts and at a 50% discharge are around 12.2 volts. AMPS Lithium batteries have 12.8 nominal volts and maintain a discharge voltage of over 12.8 volts throughout the majority of the discharge cycle.
Some lithium batteries offer a 12V nominal. Not all lithium batteries are the same. The BMS (battery management system) limits the charge and discharge abilities of the battery.The continuous charge or discharge amperage rate indicates the the BMS capacity. Lithium iron phosphate batteries are a popular way to power recreational and commercial boats, RVs, solar energy systems and other applications that require reliable, long lasting, quick charging and safe batteries. Although it costs a little more upfront, lithium provides superior longevity, efficiency and safety benefits compared to traditional, lead acid batteries. In the long run, lithium batteries cost less with the added benefit that you will not need to replace them every 3 to 5 years. Lithium batteries also maintain a consistent, higher discharge voltage over the course of the discharge. 50% DOD (depth of discharge) = 12.8v or more. Whereas the discharge voltage in lead acid batteries drops with the state of charge (50% DOD = 12.2V or less, 80% DOD = 11.7V or less - per Lifeline AGM lead acid manual).
Lead based batteries vary in how long they last. It can be anywhere between 300 to 1000 cycles. Quality brands like Trojan and Lifeline Lead based batteries are not cheap. They cost more because they are made of better materials and have a longer life.
However, lead acid batteries should not be discharged below 50% or it will significantly reduce the life expectancy of lead acid batteries. AMPS 105Ah Lithium Battery has 105 usable amp hours. 210 AH / 2688Wh / 200 BMS Deep Cycle 12V Battery LiFePO4 w/ stainless steel case. 8D 304 Ah - 3890 Wh - 300 A BMS 12V Lithium Deep Cycle / Starter LiFePO4 Battery.
8D 304 Ah - 3890 Wh - 200 A BMS 12V Lithium Deep Cycle LiFePO4 Battery. 4D 304 Ah - 3890 Wh - 300 A BMS 12V Lithium Deep Cycle / Starter LiFePO4 Battery. 8D 400 Ah - 5120 Wh - 300 A BMS 12V Deep Cycle/Starter Lithium LiFePO4 Battery.
8D 400 Ah 5120Wh Lithium Deep Cycle 12V Battery w/ 200A BMS w/ stainless case. 8D 400 Ah 5120Wh Lithium Deep Cycle/Start 12V Battery 300A BMS w/ stainless case.
The item "105 Ah / 1344 Wh 12V Deep Cycle Lithium LiFePO4 Battery with 100 Amp BMS 12.8V" is in sale since Thursday, May 21, 2020. This item is in the category "Consumer Electronics\Multipurpose Batteries & Power\Rechargeable Batteries". The seller is "lithiumbatteries" and is located in Bacliff, Texas. This item can be shipped to United States.