Mastervolt 66015500
The Mastervolt 66015500 is a battery pack with a nominal voltage of 13.2 V, a capacity of 400 Ah, dimensions of 622 x 197 x 355 mm, 3500 cycles, a weight of 55 kg (121.3 lb) and an ingress rating of IP65.
Last updated: 31 October 2026
Battery and charging
- Capacity (amp-hours)
- 400 Ah
- Battery chemistry
- Lithium Iron Phosphate
- Voltage
- 13.2 V
- Rated charge cycles
- 3500 cycles at 80 % DOD at 25 ⁰C, max. C3 charge and C2 discharge
- Maximum discharge current, as the maker labels it
- 500 A
“Nominal battery capacity 400 Ah”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
“Battery chemistry Lithium Iron Phosphate”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
“Nominal battery voltage 13.2 V”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
“Cycle life 3500 cycles at 80 % DOD at 25 ⁰C, max. C3 charge and C2 discharge”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
“Max. continuous discharge current 500 A”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
Battery care and safety
- Ingress protection
- IP65
“Protection degree IP65 (electronics cabinet)”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
Size and fit
- Weight
- 55 kg
- Weight
- 121.3 lb
- Overall dimensions
- 622 x 197 x 355 mm
“Product weight 55 kg 121.3 lb”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
“Product weight 55 kg 121.3 lb”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
“Max. outer dimensions (incl. terminals/grip handles), lxwxh 622 x 197 x 355 mm 24.5 x 7.8 x 14.0 inch”
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
Sources
- MLI Ultra 12/5500 | Lithium Ion battery | Mastervolt .Archived document
Source: mastervolt.com/products/lithium-batteries/mli-ultra-12-5500
Retrieved October 31, 2026