Battery bank sizing

RV Battery Bank Size by Daily Amp-Hour Use

Pick your daily amp-hour use and the chemistry you are buying. Each page gives nameplate capacity for one to four days off grid, what that looks like in real batteries, and how much solar it takes to keep up.

26 pages in this section.

20Ah a day, LiFePO4

A 20Ah per day RV load needs about 50Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Sizi
30Ah a day, LiFePO4

A 30Ah per day RV load needs about 75Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Sizi
40Ah a day, LiFePO4

A 40Ah per day RV load needs about 100Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Siz
50Ah a day, LiFePO4

A 50Ah per day RV load needs about 125Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Siz
60Ah a day, LiFePO4

A 60Ah per day RV load needs about 150Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Siz
75Ah a day, LiFePO4

A 75Ah per day RV load needs about 188Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Siz
100Ah a day, LiFePO4

A 100Ah per day RV load needs about 250Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
125Ah a day, LiFePO4

A 125Ah per day RV load needs about 313Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
150Ah a day, LiFePO4

A 150Ah per day RV load needs about 375Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
175Ah a day, LiFePO4

A 175Ah per day RV load needs about 438Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
200Ah a day, LiFePO4

A 200Ah per day RV load needs about 500Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
250Ah a day, LiFePO4

A 250Ah per day RV load needs about 625Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
300Ah a day, LiFePO4

A 300Ah per day RV load needs about 750Ah of LiFePO4 nameplate capacity for two days off grid at 80 percent depth of discharge. Si
20Ah a day, lead-acid

A 20Ah per day RV load needs about 80Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge. Si
30Ah a day, lead-acid

A 30Ah per day RV load needs about 120Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge. S
40Ah a day, lead-acid

A 40Ah per day RV load needs about 160Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge. S
50Ah a day, lead-acid

A 50Ah per day RV load needs about 200Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge. S
60Ah a day, lead-acid

A 60Ah per day RV load needs about 240Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge. S
75Ah a day, lead-acid

A 75Ah per day RV load needs about 300Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge. S
100Ah a day, lead-acid

A 100Ah per day RV load needs about 400Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge.
125Ah a day, lead-acid

A 125Ah per day RV load needs about 500Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge.
150Ah a day, lead-acid

A 150Ah per day RV load needs about 600Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge.
175Ah a day, lead-acid

A 175Ah per day RV load needs about 700Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge.
200Ah a day, lead-acid

A 200Ah per day RV load needs about 800Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge.
250Ah a day, lead-acid

A 250Ah per day RV load needs about 1,000Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge
300Ah a day, lead-acid

A 300Ah per day RV load needs about 1,200Ah of lead-acid nameplate capacity for two days off grid at 50 percent depth of discharge