# MultiPlus-II 48/6K5/100-50 230V efficiency curve **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** multiplus-ii, expert\ **Created:** [26 November 2025 17:31 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363 "2025-11-26T17:31:40Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Raxlan](https://avatars.discourse-cdn.com/v4/letter/r/c4cdca/32.png) [@Raxlan](https://community.victronenergy.com/u/Raxlan)\ **Post date:** [26 November 2025 17:31 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/1 "2025-11-26T17:31:40Z")
Hi Victron team can you please provide the efficiency curve for the Multiplus-II 6k5 ( and 4k5 ) 1. AC–\> DC 2. DC –\> AC 3. temperature degradation ### By the way , is this also available for : Multi RS Solar 48/6000 And what about : Multi HS 19 , Multiplus-CL ---
**Author:** ![M\_Lange](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/m_lange/32/16_2.png) [@M\_Lange](https://community.victronenergy.com/u/M_Lange)\ **Post date:** [26 November 2025 17:41 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/2 "2025-11-26T17:41:56Z")
I guess for the “classic” MultiPlus it will be almost the same as shown here: > **[Multiplus-II 48/5000 efficiency curve - VictronEnergy](https://communityarchive.victronenergy.com/questions/56351/multiplus-485000-efficiency-curve.html)** Not sure if there is a similar curve available for the RS models. The HS19 isn’t finished yet. ---
**Author:** ![fredvduin](https://avatars.discourse-cdn.com/v4/letter/f/ed655f/32.png) [@fredvduin](https://community.victronenergy.com/u/fredvduin)\ **Post date:** [28 November 2025 11:06 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/3 "2025-11-28T11:06:13Z")
I have the same question The new 4k5 and 6k5 has a new internal design and is more efficient and less noise according [![](https://europe1.discourse-cdn.com/victron/original/3X/e/0/e0b1f7079d6acfe58d71d2a20c48f1cd6928e97e.jpeg "Nieuwe Victron omvormers en de HS19") ](https://www.youtube.com/watch?v=aPZel-nbS68) I have a Multiplus II 48/3000 and I want to upgrade to a new Multiplus II ---
**Author:** ![Raxlan](https://avatars.discourse-cdn.com/v4/letter/r/c4cdca/32.png) [@Raxlan](https://community.victronenergy.com/u/Raxlan)\ **Post date:** [30 November 2025 09:45 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/4 "2025-11-30T09:45:01Z")
Hi Matthias, thanks for sharing the curves for the well known 48/5000. I knew this thread already, it is the reason for my question to ask for sharing the data of new models. Background: I’d like to optimise my system so I need to know the exact efficency. Conneting panels by using Microinverter and 230V AC or Victron MPPT’s with 48V DC and then select which cable diameter ? What is the best economic solution ---
**Author:** ![rene.vanvelzen](https://avatars.discourse-cdn.com/v4/letter/r/3bc359/32.png) [@rene.vanvelzen](https://community.victronenergy.com/u/rene.vanvelzen)\ **Post date:** [4 December 2025 11:25 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/5 "2025-12-04T11:25:27Z")
Hi there, I’m also curious about the efficiency at low power levels for the new 4k5 model. Standby-loss at home is less than 100 W at night and most inverters have terrible efficiencies at low power. Growatt for example just makes me cry at low power. [Multiplus-II 48/5000 efficiency curve - VictronEnergy](https://communityarchive.victronenergy.com/questions/56351/multiplus-485000-efficiency-curve.html) The DC-AC conversion at 200 W looks good following Raphael’s measurements for the old 5000 model. It would be great if the 4500 brings further improvements on the low end. ---
**Author:** ![kappa7](https://avatars.discourse-cdn.com/v4/letter/k/aeb1de/32.png) [@kappa7](https://community.victronenergy.com/u/kappa7)\ **Post date:** [16 April 2026 07:12 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/6 "2026-04-16T07:12:54Z")
If we can trust the Victron datasheet the new 4k5 and 6k5 are definitely worst for idle consumption than the “old” 3k/5k parts: The maximum efficiency is the same (95% for the smaller 3k/4k5 and 96% for the 5k/6k5), but the zero load power is much higher: 3k zero load power = 11W 4k5 zero load power = 20W 5k zero load power = 18W 6k5 zero load power = 28W ---
**Author:** ![chrigu](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@chrigu](https://community.victronenergy.com/u/chrigu)\ **Post date:** [16 April 2026 08:03 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/7 "2026-04-16T08:03:39Z")
If you compare a 48/3000 to a 48/4k5 then thats an unfair comparison. The 48/3000 is rated at 2400W while the 4k5 is rated at 4500W. The older units used their kVA rating in the name. A better comparison would be 48/5000 versus 48/4k5, since then you compare 4000W to 4500W. ---
**Author:** ![nickdb](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/nickdb/32/51440_2.png) [@nickdb](https://community.victronenergy.com/u/nickdb)\ **Post date:** [16 April 2026 08:20 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/8 "2026-04-16T08:20:38Z")
> [@chrigu](#): > > while the 4k5 is rated at 4500W. It’s rated at 4000W. ---
**Author:** ![kappa7](https://avatars.discourse-cdn.com/v4/letter/k/aeb1de/32.png) [@kappa7](https://community.victronenergy.com/u/kappa7)\ **Post date:** [16 April 2026 09:02 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/9 "2026-04-16T09:02:03Z")
Ok so just compare the 4k5 with the 5k: 4k5 zero load power = 20W (max efficiency 95%) 5k zero load power = 18W (max efficiency 96%) With the “old” 5k you get more power, better efficiency and lower zero load power. From an efficiency point of view the choice is simple. ---
**Author:** ![chrigu](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@chrigu](https://community.victronenergy.com/u/chrigu)\ **Post date:** [16 April 2026 09:41 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/10 "2026-04-16T09:41:31Z")
> [@kappa7](#): > > you get more power Thats the point, you dont. 5kVA is not 5kW ---
**Author:** ![chrigu](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@chrigu](https://community.victronenergy.com/u/chrigu)\ **Post date:** [16 April 2026 09:42 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/11 "2026-04-16T09:42:23Z")
And i thought they now name them after the kW rating, but apparently its a 2h limit… ---
**Author:** ![kappa7](https://avatars.discourse-cdn.com/v4/letter/k/aeb1de/32.png) [@kappa7](https://community.victronenergy.com/u/kappa7)\ **Post date:** [16 April 2026 12:29 UTC](https://community.victronenergy.com/t/multiplus-ii-48-6k5-100-50-230v-efficiency-curve/49363/12 "2026-04-16T12:29:20Z")
in inverter mode they have the same power: 4kW at 25°C, but in charge mode the the 5k has much more power: 70A vs 55A at 25°C.