Batteries
Types batteries AGM Gel OpZs OpZv Lead Carbon LiFePO4 NCA Saltwater Zinc Bromine Etc,etc, etc, etc, etc, etc,
Today focus on Victron batteries AGM Gel OpZs OpZv Lead Carbon LiFePO4 NCA Saltwater Zinc Bromine Etc,etc, etc, etc, etc, etc,
GEL and AGM Batteries What is important Charge voltage Charge current Battery temperature Dept of Discharge (DoD) Memory effect Storage
GEL and AGM Batteries Charge voltage Too low charge voltage, battery not full Too high charge voltage, battery overcharged, heat, boiling Victron AGM and Gel batteries: Absorption 14,4V Float 13,8V Storage 13,5V
Charge process Example: Battery 100Ah empty Charger 12A Time is 100/12 = 8 hours Bulk The Absorption charge time can be 6 hours or even longer Total charge time empty battery 8 + 6 = 14 hours!!! Charge Efficiency AGM/Gel +/- 80%
GEL and AGM Batteries Charge current Choose 10 20% of battery capacity (max.30%) Too high charge current, temperature increases, result in shorter lifetime
GEL and AGM Batteries Battery temperature Charge voltage is set for 20 C Higher battery temperature, needs lower charge voltage Lower temperature, needs higher voltage Batteries charged with wrong charge voltage, will have shorter lifetime or damaged Almost all our chargers are temperature compensated
GEL and AGM Batteries Battery temperature
GEL and AGM Batteries Smart Battery Sense Smart networking with charger 24 mv / C for a 12V battery
GEL and AGM Batteries State of Charge SoC vs Depth of Discharge DoD
GEL and AGM Batteries Do not discharge your AGM or Gel batteries below 50% SoC, to safe lifetime in cycles. The number of cycles for a rechargeable battery indicates how many times it can undergo the process of complete charging and discharging until failure or it starting to lose capacity. Cycle life is the number of charge/recharge cycles that the battery can support before that its capacity falls under 80%. (Gel Long Life = 2v OPzV)
GEL and AGM Batteries Memory effect Lead acid batteries (AGM/Gel) needs to be fully charged frequently. Advice is minimum once a month, better more often. That means the complete Absorption phase (14 hours) Can you guarantee that in OffGrid solar system? Not used part, will become sulphate crystals and cannot be used anymore. So total capacity is reduced!
GEL and AGM Batteries Sulphation starts when: 1. Battery stored discharged. 2. Used by high temperature 3. For a long time, not completely charged to 100% When a battery is discharged the active mass goes into very small and hard sulfate crystals. Charge your battery minimum every 30 days to 100% SOC. *No warranty
NEW: Victron Lead Carbon Batteries (106Ah und 160Ah) Lead-carbon: better partial state-of-charge performance, more cycles, and higher efficiency Replacing the active material of the negative plate by a lead-carbon composite potentially reduces sulfation and improves charge acceptance of the negative plate. The advantages of lead-carbon therefore are: Less sulfation in case of partial state-of-charge operation. Lower charge voltage and therefore higher efficiency and less corrosion of the positive plate. And the overall result is improved cycle life. Victron Lead Carbon Batteries: Absorption 14,1 14,4V Float 13,5-13,8V Storage 13,2-13,5V
Two or more chargers in parallel?? Can I put two or more chargers in parallel? Yes, no problem. Use same charge voltages Be aware of total charge current In BULK phase all chargers work together to fill the battery with amps. When Absorption starts, the charge current is low, the strongest will finish the job.
Chargers in Parallel: thanks to Ruurd ten Brink When you blow up a balloon (see picture) from two sides, the balloon will be thicker and thicker and at one time only that side that has the most inflation pressure will push the last bit of air inside the balloon and at that moment the balloon is already almost completely filled up with air. This is exactly the same when you do this with two battery chargers to a battery, up to + / - 95% they work together and the last part of the charging process is done by the charger with the highest-tuned voltage absorption setting.
Battery Balancer The Battery Balancer equalizes the state of charge of two series connected 12V batteries, or of several parallel strings of series connected batteries. When the charge voltage of a 24V battery system increases to more than 27V, the Battery Balancer will turn on and compare the voltage over the two series connected batteries. The Battery Balancer will draw a current of up to 0,7A from the battery (or parallel connected batteries) with the highest voltage. The resulting charge current differential will ensure that all batteries will converge to the same state of charge
Battery Balancer Ri Start voltage : 27,3 V Active when: midpoint voltage differents is higher than 50mV 100mV Led warning 200mV Alarm (relay+led) After charging stops and starts again the alarm activated again when the imbalance is still there
Battery Balancer
Lithium Batteries Store a lot of energy Saves up to 70% in space / Saves up to 70% in weight Charge Efficiency Factor 95% Hold their charge longer No memory effect Much more charge/discharge cycles Temperature range
Lithium Batteries Lithium-iron-phosphate (LiFePO4 or LFP) is the safest of li-ion battery types. The nominal voltage of a LFP cell is 3,2V and the battery has 4 cells inside. A LFP battery does not need to be fully charged. Protection needed! Overvoltage Undervoltage Temperature Balancing BTV Cables
Lithium Batteries BTV Cables
Lithium Batteries the BMS (Battery Management System) Battery BMS gives information about the health of the battery. VEbusBMS controls the system
Lithium Boat or Vehicle system with VEbusBMS VEbusBMS 12, 24, 48V systems Needed: Cyrix relays Battery Protect
Lithium Boat or Vehicle system with 12-200 BMS BMS 12-200 Only 12V systems Max 200A dc (2500VA load) Current limiter Mounted in minus string
Lithium ion Batteries with Bluetooth LiFePO4 smart batteries 12,8 V 2 types of BMS: VE.Bus or the BMS 12/200 New LiFePO4 smart battery 25,6V 200Ah LFP 12.8V 60 Ah 100 Ah 150 Ah 200 Ah 300Ah
NOW: Lithium-ion with Bluetooth View individual cell voltages and temperature on your smart phone. See which cells are being balanced. Allow to charge temperature (adjust) Allow to discharge voltage (adjust) Later: Batteries communicate with each other to decide on cell balancing..
LFP 24V Lithium batteries and Lynx-ion Lithium-ion LFP batteries Build in active cell balancing External BMS with build in battery monitor 400A and 1000A Can be paralleled up to 10 strings Can be used in 24V and 48 V systems
Lithium HE 24V Lithium Nickel Manganese Cobalt Oxide (NMC) batteries Build in active cell balancing Build in DC fuse External BMS with build in battery m0nitor 400A or 1000A Can be connected in series 24 or 48V Can be paralleled up to 64 strings
Victron Peak Power Pack 12Vdc BMS protection BUILT IN High power output 200A Domestic output 30A Cannot be connected in series or parallel. Wide input charging 11V 25V Remote button with led Availble: 8Ah 20Ah 30Ah 40Ah 102Wh 256Wh 384Wh 512Wh
Victron Peak Power Pack 12Vdc Applications Caravan mover (wohnwagen mover) Portable power pack Solar battery
Victron Peak Power Pack 12Vdc Two inputs 3 A power adapter (included) 7 A multipurpose input: starter battery / solar panel
Victron Peak Power Pack 12Vdc Can also be fast-charged with max.20a @ 14V with a battery charger or inverter/charger connected to the high current output. *No protection overvoltage
Victron Peak Power Pack 12Vdc Interfaces VE.Direct port Push button with bicolor LED (included)
Lithium Super Pack Integrated BMS and safety switch The SuperPack batteries are extremely easy to install, not needing any additional components. The internal switch will disconnect the battery in case of over discharge, over charge or high temperature. Limited charge/discharge current. CHARGE and DISCHARGE Max. cont. Discharge Charge Peak (10sec) 20Ah 30A 80A 60Ah 30A 80A 100Ah 50A 100A 200Ah 70A 100A 25,6V 50Ah 50A 100A
Lithium Super Pack 12,8V/50-200Ah The batteries can be connected in parallel. Series connection is not allowed. Cycle design life: 2000 cycles at 100% discharge 4000 cycles at 50% discharge 7000 cycles at 30% discharge
Overview on cycle life 3500 3000 2500 2000 1500 1000 500 0 AGM Deep Cycle AGM Deep Cycle Telecom Battery GEL Deep Cycle AGM Super Cycle Battery Lead Carbon Battery GEL OPzV OPzS Solar Batteries 30% 50% 100%
Overview on cycle life 8000 7000 6000 5000 4000 3000 2000 1000 0 LiFePO4 Battery 24V LiFePO4 Battery 12,8V LiFePO4 12,8V Lithium SuperPack Lithium HE Battery 24V 30% 50% 100%