Assumptions
18650 Battery Assumptions
Specification | Value |
---|---|
Nominal Voltage | 3.7v |
Max Voltage | 4.2v |
Cutoff Voltage | 3.0v |
Capacity | 2500mAh |
Battery Spec 3S24P - 60Ah
Specification | Value |
---|---|
Nominal Voltage (3 x 3.7v) | 11.1v |
Max Voltage (3 x 4.2v) | 12.6 |
Min Voltage (3 x 3.0v) | 9v |
Cells in Series for Voltage | 3 |
Parallel Cells to Get Capacity 60Ah/2.0Ah | 30 |
Total Cells Required | 90 |
If battery stops being useful at 10.8 for some appliances, then we would end up getting 50% the capacity of the 3S battery pack.
Battery Spec 4S20P - 40Ah
Specification | Value |
---|---|
Nominal Voltage (4 x 3.7v) | 14.8v |
Max Voltage (4 x 4.2v) | 16.8v |
Min Voltage (4 x 3.0v) | 12.0v |
Cells in Series for Voltage | 4 |
Parallel Cells to Get Capacity 40Ah/2.0Ah | 20 |
Total Cells Required | 80 |
Would need to step down the voltage to 12v which may introduce some losses but would allow us to use the full capacity of the batteries.
Test Results of Batteries
number | color | manuf. | model | mAh |
10982 | blue | Samsung | ICR18650-28A | 2285 |
10983 | blue | Samsung | ICR18650-28A | 2256 |
10984 | blue | Samsung | ICR18650-28A | 2274 |
10985 | blue | Samsung | ICR18650-28A | 2198 |
10986 | blue | Samsung | ICR18650-28A | 2264 |
10987 | beige | LG | LGABB41865 | 2431 |
10988 | beige | LG | LGABB41865 | 2482 |
10989 | beige | LG | LGABB41865 | 2453 |
10990 | beige | LG | LGABB41865 | 2455 |
10991 | beige | LG | LGABB41865 | 2484 |
10992 | beige | LG | LGABB41865 | 2458 |
10999 | green | Samsung | ICR18650-30B | 2116 |
11006 | beige | LG | LGDBB41865 | 2287 |
11020 | red (LPR) | Sanyo | UR18650ZY | 2469 |
11025 | beige | LG | LGABB41865 | 2285 |
11026 | beige | LG | LGABB41865 | 2253 |
11027 | beige | LG | LGABB41865 | 2454 |
11028 | beige | LG | LGABB41865 | 2325 |
11029 | beige | LG | LGABB41865 | 2212 |
11030 | beige | LG | LGABB41865 | 2343 |
11031 | blue | Samsung | ICR18650-28A | 2458 |
11032 | blue | Samsung | ICR18650-28A | 2430 |
11033 | blue | Samsung | ICR18650-28A | 2433 |
11034 | blue | Samsung | ICR18650-28A | 2458 |
11035 | blue | Samsung | ICR18650-28A | 2458 |
11036 | blue | Samsung | ICR18650-28A | 2438 |
11037 | red (LPR) | Sanyo | UR18650ZY | 2461 |
11041 | red (LPR) | Sanyo | UR18650ZY | 2461 |
11043 | magenta | Sanyo | UR18650ZTA | 2220 |
11044 | magenta | Sanyo | UR18650ZTA | 2232 |
11045 | magenta | Sanyo | UR18650ZTA | 2316 |
11046 | magenta | Sanyo | UR18650ZTA | 2326 |
11047 | magenta | Sanyo | UR18650ZTA | 2191 |
11048 | magenta | Sanyo | UR18650ZTA | 2207 |
11049 | magenta | Sanyo | UR18650ZTA | 2435 |
11050 | magenta | Sanyo | UR18650ZTA | 2442 |
11051 | magenta | Sanyo | UR18650ZTA | 2344 |
11052 | magenta | Sanyo | UR18650ZTA | 2348 |
11053 | magenta | Sanyo | UR18650ZTA | 2438 |
11054 | magenta | Sanyo | UR18650ZTA | 2452 |
11055 | magenta | Sanyo | UR18650ZTA | 2353 |
11056 | magenta | Sanyo | UR18650ZTA | 2334 |
11057 | aqua | LG | LGDB118650 | 2234 |
11058 | aqua | LG | LGDB118650 | 2237 |
11059 | aqua | LG | LGDB118650 | 2237 |
11060 | aqua | LG | LGDB118650 | 2232 |
11061 | magenta | Sanyo | UR18650ZTA | 2358 |
11062 | magenta | Sanyo | UR18650ZTA | 2344 |
11063 | magenta | Sanyo | UR18650ZTA | 2351 |
11064 | magenta | Sanyo | UR18650ZTA | 2347 |
11065 | magenta | Sanyo | UR18650ZTA | 2327 |
11066 | magenta | Sanyo | UR18650ZTA | 2328 |
11067 | aqua | LG | LGDB118650 | 2223 |
11068 | aqua | LG | LGDB118650 | 2225 |
11069 | beige | LG | LGABB41865 | 2444 |
11075 | green | Samsung | ICR18650-30B | 2403 |
11076 | green | Samsung | ICR18650-30B | 2458 |
11077 | green | Samsung | ICR18650-30B | 2446 |
11078 | green | Samsung | ICR18650-30B | 2462 |
11079 | green | Samsung | ICR18650-30B | 2422 |
11080 | green | Samsung | ICR18650-30B | 2374 |
11081 | green | Samsung | ICR18650-30B | 2117 |
11082 | green | Samsung | ICR18650-30B | 2115 |
11083 | green | Samsung | ICR18650-30B | 2099 |
11092 | magenta | Sanyo | UR18650ZTA | 2459 |
11093 | magenta | Sanyo | UR18650ZTA | 2456 |
11094 | magenta | Sanyo | UR18650ZTA | 2435 |
11095 | magenta | Sanyo | UR18650ZTA | 2458 |
11096 | magenta | Sanyo | UR18650ZTA | 2467 |
11097 | magenta | Sanyo | UR18650ZTA | 2439 |
11103 | beige | LG | LGABB41865 | 2379 |
11104 | orange | LG | LGABC21865 | 2138 |
11106 | orange | LG | LGABC21865 | 2164 |
11115 | magenta | Sanyo | UR18650ZTA | 2476 |
11116 | magenta | Sanyo | UR18650ZTA | 2483 |
11118 | magenta | Sanyo | UR18650ZTA | 2480 |
11131 | red (GR) | Sanyo | UR18650F | 2408 |
11132 | red (GR) | Sanyo | UR18650F | 2410 |
11133 | red (GR) | Sanyo | UR18650F | 2398 |
11134 | blue | Samsung | ICR18650-28A | 2340 |
11135 | blue | Samsung | ICR18650-28A | 2343 |
11136 | blue | Samsung | ICR18650-28A | 2404 |
11137 | blue | Samsung | ICR18650-28A | 2427 |
11138 | blue | Samsung | ICR18650-28A | 2435 |
11139 | blue | Samsung | ICR18650-28A | 2391 |
11156 | green | Samsung | ICR18650-30B | 2433 |
11157 | green | Samsung | ICR18650-30B | 2439 |
11158 | green | Samsung | ICR18650-30B | 2474 |
total | 208 | |||
average | 2358 | |||
maximum | 2484 | |||
minimum | 2099 |
Spreadsheet: 88af-18650.xls
References
Reference | URL |
---|---|