# \#smart\_solar\_charging **URL:** https://community.victronenergy.com/tag/smart-solar-charging/224.md [Latest](https://community.victronenergy.com/latest.md) · [Categories](https://community.victronenergy.com/categories.md) · [Tags](https://community.victronenergy.com/tags.md) --- ## [Charging issues with Easysolar, both MP2 and Smartsolar MPP2 refuse to charge](https://community.victronenergy.com/t/charging-issues-with-easysolar-both-mp2-and-smartsolar-mpp2-refuse-to-charge/64818)
**Author:** [@MHinOZ](https://community.victronenergy.com/u/MHinOZ)\ **Replies:** 1\ **Last updated:** [12 November 2026 11:29 UTC](https://community.victronenergy.com/t/charging-issues-with-easysolar-both-mp2-and-smartsolar-mpp2-refuse-to-charge/64818 "2026-11-12T11:29:59Z")
Charging issues with new installation of Easysolar 2 GX - New Installation, never used this unit before. System is connected to JK BMS and is happily using the JK as the controlling BMS. JK BMS has no errors and has char… --- ## [Easysolar ii GX SmartSolar refusing to turn on charging with #OR4 BMS is active and connected to GX](https://community.victronenergy.com/t/easysolar-ii-gx-smartsolar-refusing-to-turn-on-charging-with-or4-bms-is-active-and-connected-to-gx/64871)
**Author:** [@MHinOZ](https://community.victronenergy.com/u/MHinOZ)\ **Replies:** 9\ **Last updated:** [12 November 2026 05:21 UTC](https://community.victronenergy.com/t/easysolar-ii-gx-smartsolar-refusing-to-turn-on-charging-with-or4-bms-is-active-and-connected-to-gx/64871 "2026-11-12T05:21:49Z")
Charging issues with new installation of Easysolar 2 GX - New Installation, never used this unit before. System is connected to JK BMS and is happily using the JK as the controlling BMS. JK BMS has no errors and has char… --- ## [Switching Charging 12 and 24 volt batteries either/on](https://community.victronenergy.com/t/switching-charging-12-and-24-volt-batteries-either-on/62142)
**Author:** [@mmiklautz](https://community.victronenergy.com/u/mmiklautz)\ **Replies:** 3\ **Last updated:** [3 September 2026 08:19 UTC](https://community.victronenergy.com/t/switching-charging-12-and-24-volt-batteries-either-on/62142 "2026-09-03T08:19:11Z")
I found a few topic to similar themes, but no one fits to my setup.. My RV is using a 24 Volt battery system, powered by a 24V alternator, in the living space i use a 12V system The connection between the 2 systems is … --- ## [DVCC on Venus OS with VE.Smart as backup?](https://community.victronenergy.com/t/dvcc-on-venus-os-with-ve-smart-as-backup/60752)
**Author:** [@sgwright](https://community.victronenergy.com/u/sgwright)\ **Replies:** 14\ **Last updated:** [24 July 2026 19:44 UTC](https://community.victronenergy.com/t/dvcc-on-venus-os-with-ve-smart-as-backup/60752 "2026-07-24T19:44:33Z")
I have a setup on my boat with Venus OS running on a Pi, connected with USB VE.direct cables to a BMV-712, and two Smartsolars. Currently the smartshunt is using the Aux input for monitoring a 2nd battery bank V, so ther… --- ## [Trends data repeatedly cycling up-and-down on a 14-minute interval](https://community.victronenergy.com/t/trends-data-repeatedly-cycling-up-and-down-on-a-14-minute-interval/60302)
**Author:** [@borderlander](https://community.victronenergy.com/u/borderlander)\ **Replies:** 1\ **Last updated:** [11 July 2026 18:42 UTC](https://community.victronenergy.com/t/trends-data-repeatedly-cycling-up-and-down-on-a-14-minute-interval/60302 "2026-07-11T18:42:34Z")
Hello, I have a setup with a 120Ah AGM battery, 2x 100W solar panels, a SmartSolar MPPT 75|15, SmartShunt, and SBP. At 16:40 yesterday the data started having a square-wave pattern to it, cycling on/off almost exactly … --- ## [Absorption time is only for minutes with AGM battery](https://community.victronenergy.com/t/absorption-time-is-only-for-minutes-with-agm-battery/60140)
**Author:** [@Mahti](https://community.victronenergy.com/u/Mahti)\ **Replies:** 3\ **Last updated:** [7 July 2026 12:37 UTC](https://community.victronenergy.com/t/absorption-time-is-only-for-minutes-with-agm-battery/60140 "2026-07-07T12:37:51Z")
Hi, I was wondering if everything is correct on my solar system regarding to the absorption times. I have a 160W panel with 136Ah Sunwind AGM battery. The charge controller is Smartsolar MPPT 100/20 and it has the defau… --- ## [Smartsolar MPPT 100/20, battery voltages are below set values](https://community.victronenergy.com/t/smartsolar-mppt-100-20-battery-voltages-are-below-set-values/60039)
**Author:** [@Mahti](https://community.victronenergy.com/u/Mahti)\ **Replies:** 9\ **Last updated:** [4 July 2026 16:26 UTC](https://community.victronenergy.com/t/smartsolar-mppt-100-20-battery-voltages-are-below-set-values/60039 "2026-07-04T16:26:20Z")
Hi, I have set a 160W solar panel with a 136Ah Sunwind AGM battery. The recommended absorption voltage for this battery is 14,22V and float voltage 13,60V and I have set these values in the app. However the battery volt… --- ## [Strange DESS discharging behaviour](https://community.victronenergy.com/t/strange-dess-discharging-behaviour/54382)
**Author:** [@PhilipZetten](https://community.victronenergy.com/u/PhilipZetten)\ **Replies:** 5\ **Last updated:** [9 March 2026 11:35 UTC](https://community.victronenergy.com/t/strange-dess-discharging-behaviour/54382 "2026-03-09T11:35:39Z")
For the past three days I noticed that my Victron DESS discharges the batteries to the grid early in the morning and late in the afternoon. The DESS is in ‘Green mode’ since I don’t want to trade electricity, I just want… --- ## [More frequent solar updates using RV-C](https://community.victronenergy.com/t/more-frequent-solar-updates-using-rv-c/54140)
**Author:** [@pedrodelgado](https://community.victronenergy.com/u/pedrodelgado)\ **Replies:** 0\ **Last updated:** [28 February 2026 18:52 UTC](https://community.victronenergy.com/t/more-frequent-solar-updates-using-rv-c/54140 "2026-02-28T18:52:48Z")
Has anyone managed to get a request DGN working on RV-C with Cerbo GX? I’m working on a load dump system, heating various water heaters. I have recently moved across to communicating with RV-C. I’m getting all of the … --- ## [Multiplus II & SmartSolar MPPT: Same charging settings but different charging behaviour](https://community.victronenergy.com/t/multiplus-ii-smartsolar-mppt-same-charging-settings-but-different-charging-behaviour/53979)
**Author:** [@billakisdrama](https://community.victronenergy.com/u/billakisdrama)\ **Replies:** 1\ **Last updated:** [27 February 2026 11:40 UTC](https://community.victronenergy.com/t/multiplus-ii-smartsolar-mppt-same-charging-settings-but-different-charging-behaviour/53979 "2026-02-27T11:40:57Z")
Hello everyone. I have been dealing the the situation below: System Components: Inverter/Charger: MultiPlus-II 24/3000/70 Solar Charge Controller: SmartSolar MPPT VE.Can 150/85 Battery Bank: Lead-acid (configur… --- ## [Can two Smart Solar MPPT 75/15 "load" outputs be connected in parallel?](https://community.victronenergy.com/t/can-two-smart-solar-mppt-75-15-load-outputs-be-connected-in-parallel/53446)
**Author:** [@tstiller](https://community.victronenergy.com/u/tstiller)\ **Replies:** 4\ **Last updated:** [16 February 2026 17:43 UTC](https://community.victronenergy.com/t/can-two-smart-solar-mppt-75-15-load-outputs-be-connected-in-parallel/53446 "2026-02-16T17:43:52Z")
I’ve got two Smart Solar MPPT 75/15 chargers. Both PV inputs are connected to the same power source, which is a large 60V battery bank – yes, I know that’s not how it’s supposed to be done. The battery outputs of both c… --- ## [Is this MPPT sizing calc for a RS 450/200 correct?](https://community.victronenergy.com/t/is-this-mppt-sizing-calc-for-a-rs-450-200-correct/51756)
**Author:** [@houser](https://community.victronenergy.com/u/houser)\ **Replies:** 5\ **Last updated:** [18 January 2026 15:04 UTC](https://community.victronenergy.com/t/is-this-mppt-sizing-calc-for-a-rs-450-200-correct/51756 "2026-01-18T15:04:26Z")
Hello, Looking at new stuff and have done the calc below at MPPT Calculator - Victron Energy Is it correct? Maybe pushing it a bit but 4x identical strings with 8x 430W panels per string is accepted by the calculator. … --- ## [Direct ve port connection between 250VA inverter and Smart Solar MPPT](https://community.victronenergy.com/t/direct-ve-port-connection-between-250va-inverter-and-smart-solar-mppt/51041)
**Author:** [@cjc160](https://community.victronenergy.com/u/cjc160)\ **Replies:** 2\ **Last updated:** [2 January 2026 18:52 UTC](https://community.victronenergy.com/t/direct-ve-port-connection-between-250va-inverter-and-smart-solar-mppt/51041 "2026-01-02T18:52:10Z")
Hi All, I have a Smart Solar MPPT that has an onboard bluetooth connection. If i connect my little 250VA inverter directly to the MPPT (ve direct to ve direct) will this allow me to see the data from my inverter? Or sho… --- ## [Smartsolar 450/200 connected to hydro generator keeps hunting and wont hold constant power](https://community.victronenergy.com/t/smartsolar-450-200-connected-to-hydro-generator-keeps-hunting-and-wont-hold-constant-power/48174)
**Author:** [@Pboaden](https://community.victronenergy.com/u/Pboaden)\ **Replies:** 3\ **Last updated:** [1 January 2026 18:46 UTC](https://community.victronenergy.com/t/smartsolar-450-200-connected-to-hydro-generator-keeps-hunting-and-wont-hold-constant-power/48174 "2026-01-01T18:46:24Z")
Hi, i have a 450/200 connected to a hydro generator, the generator is a 3phase permenant magnet connected through a bridge rectifier with a capacitor connected on the dc side to smooth the ripple voltage. It gives a maxi… --- ## [VRM, Firmware Update doesn't update Bluetooth Firmware](https://community.victronenergy.com/t/vrm-firmware-update-doesnt-update-bluetooth-firmware/50198)
**Author:** [@NFBR](https://community.victronenergy.com/u/NFBR)\ **Replies:** 1\ **Last updated:** [15 December 2025 07:39 UTC](https://community.victronenergy.com/t/vrm-firmware-update-doesnt-update-bluetooth-firmware/50198 "2025-12-15T07:39:17Z")
When you update firmware via VRM on MPPT’s and other Ve.Smart devices, the BT firmware isn’t updated. Seems the only way to update the BT firmware is via BT, locally with Victron Connect. Is this by design for some rea… --- ## [Is temperature taken into account in the LFP charging algorithm (SmartSolar 100/20)?](https://community.victronenergy.com/t/is-temperature-taken-into-account-in-the-lfp-charging-algorithm-smartsolar-100-20/49199)
**Author:** [@post.matter](https://community.victronenergy.com/u/post.matter)\ **Replies:** 5\ **Last updated:** [25 November 2025 12:10 UTC](https://community.victronenergy.com/t/is-temperature-taken-into-account-in-the-lfp-charging-algorithm-smartsolar-100-20/49199 "2025-11-25T12:10:06Z")
Hello, first time poster here… I have a system with: SmartSolar 100/20 Battery Monitor BMV 702+Bluetooth LiFePo battery (offgridtec) The MPPT reads the battery voltage from the BMV Bluetooth “network”. Now I intend … --- ## [Why is the web status dashboard showing an empty battery](https://community.victronenergy.com/t/why-is-the-web-status-dashboard-showing-an-empty-battery/48577)
**Author:** [@twoelfer](https://community.victronenergy.com/u/twoelfer)\ **Replies:** 19\ **Last updated:** [16 November 2025 15:19 UTC](https://community.victronenergy.com/t/why-is-the-web-status-dashboard-showing-an-empty-battery/48577 "2025-11-16T15:19:41Z")
Sometime ago, i did something (i don’t know what) that made the status of my batteries beeing displayed as “getting empty” until they were shown as “empty” on the dashboard. However, today i was onsite and found the batt… --- ## [SmartSolar 250|70 disappeared from the VRM and device list](https://community.victronenergy.com/t/smartsolar-250-70-disappeared-from-the-vrm-and-device-list/45606)
**Author:** [@Denn](https://community.victronenergy.com/u/Denn)\ **Replies:** 4\ **Last updated:** [12 November 2025 20:53 UTC](https://community.victronenergy.com/t/smartsolar-250-70-disappeared-from-the-vrm-and-device-list/45606 "2025-11-12T20:53:32Z")
Hello community! The SmartSolar MPPT disappeared from VRM and device list in the remote console. This happened after I connected solar panels to the EasySolar-II and error #67 “BMS Connection lost” appeared. Then, I dis… --- ## [How to reduce 5V threshold on smartsolar?](https://community.victronenergy.com/t/how-to-reduce-5v-threshold-on-smartsolar/46892)
**Author:** [@MaximeGeay](https://community.victronenergy.com/u/MaximeGeay)\ **Replies:** 6\ **Last updated:** [12 October 2025 22:12 UTC](https://community.victronenergy.com/t/how-to-reduce-5v-threshold-on-smartsolar/46892 "2025-10-12T22:12:39Z")
Hello, since I installed lithium batteries, my SmartSolar 100/30 no longer starts up on its own in the morning. My battery voltage is higher than before (13.2–13.3 V), so the 5 V difference required for the charger to s… --- ## [Determining if Solar Panels are all working](https://community.victronenergy.com/t/determining-if-solar-panels-are-all-working/45501)
**Author:** [@pixeled](https://community.victronenergy.com/u/pixeled)\ **Replies:** 1\ **Last updated:** [16 September 2025 20:19 UTC](https://community.victronenergy.com/t/determining-if-solar-panels-are-all-working/45501 "2025-09-16T20:19:18Z")
I have a victron setup professionally installed in my travel trailer - I have 4 x 200 W panels - but although it’s summer, in SoCal, I’ve never seen it \> 460W - which means 57% efficiency? Is that common/standard? Is th… --- ## [Load output triggered by SOC%](https://community.victronenergy.com/t/load-output-triggered-by-soc/44791)
**Author:** [@Stuie38](https://community.victronenergy.com/u/Stuie38)\ **Replies:** 4\ **Last updated:** [5 September 2025 00:19 UTC](https://community.victronenergy.com/t/load-output-triggered-by-soc/44791 "2025-09-05T00:19:09Z")
I’ve installed a few Lifepo4 batteries as Aux batteries in vehicles. I fit Orion XS, 300a SmartShunt, and a SmartSolar MPPT 100/20. I can connect them all to VE.Smart Network. Is it possible to share the SOC% to the S… --- ## [Voltage history differences between SmartSolar MPPT 100/30 and SmartBatterySense](https://community.victronenergy.com/t/voltage-history-differences-between-smartsolar-mppt-100-30-and-smartbatterysense/44296)
**Author:** [@speedcat2000](https://community.victronenergy.com/u/speedcat2000)\ **Replies:** 4\ **Last updated:** [1 September 2025 21:51 UTC](https://community.victronenergy.com/t/voltage-history-differences-between-smartsolar-mppt-100-30-and-smartbatterysense/44296 "2025-09-01T21:51:47Z")
Hi All, Newbie here. I’m using a SmartSolar MPPT 100/30 and SmartBatterySense with two 110V Sunpower panels and two Lifeline GPL-6CT AGM batteries (6v batteries, wired in series for 12V). I’m looking at the Daily Batt… --- ## [Suche MPPT-Laderegler mit zusätzlichem Ausgang für den Kühlschrank](https://community.victronenergy.com/t/suche-mppt-laderegler-mit-zusatzlichem-ausgang-fur-den-kuhlschrank/44013)
**Author:** [@Jantron](https://community.victronenergy.com/u/Jantron)\ **Replies:** 35\ **Last updated:** [23 August 2025 11:37 UTC](https://community.victronenergy.com/t/suche-mppt-laderegler-mit-zusatzlichem-ausgang-fur-den-kuhlschrank/44013 "2025-08-23T11:37:07Z")
Guten Tag, bei mir ist der Victron SmartSolar MPPT 100/50 verbaut. Ist dieser Laderegler dazu geeignet, einen Kühlschrank im Wohnmobil mit 12V Strom zu versorgen, wenn der Kühlschrank bisher nur die Optionen Landstrom,… --- ## [MPPT going not loading battery, despite way higher voltage coming from solar panels](https://community.victronenergy.com/t/mppt-going-not-loading-battery-despite-way-higher-voltage-coming-from-solar-panels/43196)
**Author:** [@michaelliebe](https://community.victronenergy.com/u/michaelliebe)\ **Replies:** 8\ **Last updated:** [15 August 2025 10:14 UTC](https://community.victronenergy.com/t/mppt-going-not-loading-battery-despite-way-higher-voltage-coming-from-solar-panels/43196 "2025-08-15T10:14:18Z")
According to the documentation I need to have minimum 5V more inbound than the battery needs. My current setup generates ~73 volt from two solar panels. The battery (LiFePO4) needs 28V. It is 51% charged. No matter ho… --- ## [Connecting through app](https://community.victronenergy.com/t/connecting-through-app/38793)
**Author:** [@mszwaya](https://community.victronenergy.com/u/mszwaya)\ **Replies:** 2\ **Last updated:** [16 July 2025 18:26 UTC](https://community.victronenergy.com/t/connecting-through-app/38793 "2025-07-16T18:26:46Z")
Hello- About a year ago I purchased a full DIY setup from AM Solar in Eugene, OR: panels, Victron Cerbo, GX Panel, Solar Controller, DC-DC, and a Multi-Plus. I had just finished the install and was getting ready to con… --- ## [Bulk/Absorption Time Excessive - Adaptive Charging](https://community.victronenergy.com/t/bulk-absorption-time-excessive-adaptive-charging/38914)
**Author:** [@PetrelMarine](https://community.victronenergy.com/u/PetrelMarine)\ **Replies:** 4\ **Last updated:** [9 July 2025 19:11 UTC](https://community.victronenergy.com/t/bulk-absorption-time-excessive-adaptive-charging/38914 "2025-07-09T19:11:46Z")
I have a Victron M.P.P.T 100|30 with 140W panel on the P.V side. Collectively they are charging a 600Ah Victron Li.Fe.Po Smart Battery Bank installed on a boat, with no 120VAC shore power taken on. The M.P.P.T is configu… --- ## [Mppt 100/20 Victron App don't shows energie consumption](https://community.victronenergy.com/t/mppt-100-20-victron-app-dont-shows-energie-consumption/38487)
**Author:** [@taulner](https://community.victronenergy.com/u/taulner)\ **Replies:** 0\ **Last updated:** [6 July 2025 07:47 UTC](https://community.victronenergy.com/t/mppt-100-20-victron-app-dont-shows-energie-consumption/38487 "2025-07-06T07:47:37Z")
Hi, everything’s on the title actually I have a Mppt 100/20 connected with a 175 solar panel and a lithium battery lifepo4 100A. The app shows how much the Voltage is on the batterie, it allows a charts of the daily pro… --- ## [SmartShunt 300 not synced to batteries](https://community.victronenergy.com/t/smartshunt-300-not-synced-to-batteries/36804)
**Author:** [@cptdondo](https://community.victronenergy.com/u/cptdondo)\ **Replies:** 3\ **Last updated:** [23 June 2025 11:12 UTC](https://community.victronenergy.com/t/smartshunt-300-not-synced-to-batteries/36804 "2025-06-23T11:12:54Z")
I have 200 Ah of lithium batteries. They are charged through a Victron solar charger (also a DC-DC charger and a 120V charger but those are off-line during this test.). The issue I am running into is that the SmartShun… --- ## [Max feedin power](https://community.victronenergy.com/t/max-feedin-power/23780)
**Author:** [@Skipper](https://community.victronenergy.com/u/Skipper)\ **Replies:** 1\ **Last updated:** [1 March 2025 19:34 UTC](https://community.victronenergy.com/t/max-feedin-power/23780 "2025-03-01T19:34:28Z")
This is perhaps a ‘stupid’ question. But I couldn’t find the answer here on the forum or in the ESS manual/Multiplus manual. For a given Multiplus, what’s the maximum feedin power to the grid? Say a Multiplus 3000 has 2… --- ## [MPPT selection](https://community.victronenergy.com/t/mppt-selection/18146)
**Author:** [@havoc](https://community.victronenergy.com/u/havoc)\ **Replies:** 26\ **Last updated:** [16 January 2025 07:29 UTC](https://community.victronenergy.com/t/mppt-selection/18146 "2025-01-16T07:29:47Z")
I have 4x660W panels with Voc=45,9 V and Isc=20,11A. Outdoor temperature -20C shall be considered. So for -20 Voc=0,25/100x(25+20)\*45,9+45,9=51,06 V. Series connection gives 102,12 V. This is too much for 100/50 mppt. … [Next page](https://community.victronenergy.com/tag/smart-solar-charging/224.md?match_all_tags=true&page=1&tags%5B%5D=smart_solar_charging)