lithium & solar power LiFePO4
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The CALB CA400AH cells now available

The new CA400AH cell has been added to the GWL/Power product range. This new model will replace the previous SE400AHA series.

The CALB CA series with the protective terminal covers
The CA series come with an improved safety. The safety valves in the middle of the top of the cell cases have been innovated. Also for the purpose of increased safety during transportation, all terminals are covered by plastic caps.

The CALB CA series with the protective terminal covers

The CA series come with an improved safety. The safety valves in the middle of the top of the cell cases have been innovated. Also for the purpose of increased safety during transportation, all terminals are covered by plastic caps.

The CALB CA series dimensions overview

Check the CALB products on-line here.

Steca XPC2200-24 multifunctional AUX control
The Steca XPC2200-24 inverters can be used for an off-grid system or as battery power inverter with a backup from the AC grid. Additionally the Steca XPC model offers an integrated AUX contact with max load 16A @ 230VAC (or 16A @ 12/24V DC or  3A@36V DC). By default factory setting the multifunction contact will be turned ON  in these situations:
Inverter internal over-temperature 
Current overload
Battery overvoltage or under voltage of the battery
Steca XPC2200-24 is turned off manually or with a fault
Default setting of auxiliary switch is designed to notify the user about all error conditions that might occur.  By means of the auxiliary switch the inverter can control additional equipment to manage the above situations.

Steca XPC2200-24 multifunctional AUX control

The Steca XPC2200-24 inverters can be used for an off-grid system or as battery power inverter with a backup from the AC grid. Additionally the Steca XPC model offers an integrated AUX contact with max load 16A @ 230VAC (or 16A @ 12/24V DC or  3A@36V DC). By default factory setting the multifunction contact will be turned ON  in these situations:

  • Inverter internal over-temperature 
  • Current overload
  • Battery overvoltage or under voltage of the battery
  • Steca XPC2200-24 is turned off manually or with a fault

Default setting of auxiliary switch is designed to notify the user about all error conditions that might occur.  By means of the auxiliary switch the inverter can control additional equipment to manage the above situations.

FAQ: What is the max solar power for the 10Amp MPPT controller?
Answer: The the power rating for the MPPT controllers is given by the voltage [V] and the current [A]. The max current [A] of the MPPT controller is fixed and cannot be over reached. 
This means the voltage of the batter will determine the power rating. With the “half of the voltage” (12V versus 24V) you get only “half of the maximal power”. For example: for the MPPT Solar Regulator 12/24 V, Tracer 10 A,  Input 100V (TR-1210RN)  the maximal power is about 240W at 24V: 12V 10A ——> nominal 120W  (up to 140Wp of max panel rating)24V 10A ——> nominal 240W  (up to 260Wp of max panel rating)
In order to have a 240Wp (250Wp) power rating of the panel, you need to use the 24V battery.  With the 12V battery, the max power is only 120W (up to 140Wp). 

FAQ: What is the max solar power for the 10Amp MPPT controller?

Answer: The the power rating for the MPPT controllers is given by the voltage [V] and the current [A]. The max current [A] of the MPPT controller is fixed and cannot be over reached. 

This means the voltage of the batter will determine the power rating. With the “half of the voltage” (12V versus 24V) you get only “half of the maximal power”.

For example: for the MPPT Solar Regulator 12/24 V, Tracer 10 A,  Input 100V (TR-1210RN)  the maximal power is about 240W at 24V:

12V 10A ——> nominal 120W  (up to 140Wp of max panel rating)
24V 10A ——> nominal 240W  (up to 260Wp of max panel rating)

In order to have a 240Wp (250Wp) power rating of the panel, you need to use the 24V battery.  With the 12V battery, the max power is only 120W (up to 140Wp). 

The New Sinopoly 60AH and 66AH cells

Check details here: http://www.ev-power.eu/Sinopoly-40Ah-300Ah/

Steca XPC 2200-24 integrated charger details – FAQ part 2

The XP-Compact (XPC) model offers integrated automatic battery charger.  See some more FAQs for Steca XPC 2200-24:

Question: What is the MIN voltage for Steca XPC charger?
Answer:
 The battery is disconnected when 2.9V per cell is reached and “Batt. Undervolt.” LED goes on.

Question: Can I control the charging current?
Answer:
 The Steca XPC allows user to adjust charging current with the turning the knob 22 – charger current adjustment. Please keep the maximum current within the declared continuous charging current limit of your LiFePO4 batteries.

Question: How do I find out how much charged my battery is?
Answer: SOC can be checked with Steca RCC-01 remote control, which is not supplied together with Steca XPC. With RCC-01 you can monitor state of charge of your batteries in four levels, you can change factory predefined voltage levels for MIN (low battery), MAX (absorption voltage) and FLOAT (maintained voltage at full charge). Without Steca RCC-01 remote controller only MAX and EMPTY levels can be observed at the Steca XPC itself. Additionally the Steca RCC-01 is designed for lead-acid batteries, it doe not support LiFePO4. When detailed monitoring for LiFePO4 pack is needed, we suggest using the BMS for this purpose

http://www.ev-power.eu/Inverters-DC-AC/

Steca XPC 2200-24 integrated charger details – FAQ part 1

The XP-Compact (XPC) model offers integrated automatic battery charger. It is designed to work with lead acid or gel batteries, but it can also work with LiFePo4 perfectly, when set up properly for the LFP voltage levels.  See some FAQs for Steca XPC 2200-24:

Question: How to turn on the integrated charger?
Answer:
The Charger is fully automatic. It switches on itself if minimum alternating voltage is detected at the AC input. During the charging phase the appliances at the outlet AC OUT are continually supplied with AC power.

Question: Can I leave LiFePo4 batteries connected to Steca XPC permanently?
Answer:
Yes, internal float charge system allows you to connect LiFePo4 batteries and keep them connected. Equalization charge option must be switched off! There is small switch at the bottom of Steca XPC called “equalize.” This must be switched OFF!

Question: What is the MAX voltage for Steca XPC charger:
Answer: Integrated automatic charger stops charging when 3.6V per cell absorption charge is reached and 3.37V is maintained (float charge). Green LED “Batt 100%” goes ON.

More details: http://www.ev-power.eu/Inverters-DC-AC/ 

Make your own charging cable for your EV!

Check our new product - J1772 cable with EVSE kit included! Now you can directly charge you vehicle (Nisan Leaf, Citroen Berlingo Electrique, Opel Ampera, Renault Fluence, Mitsubishi Miev, Mia Electric, Citroen C-Zero, Peugeot iOn, and others with J1772 connector). This cable has a capability of charging with up to 16 Amp (3.6 kW of power) and includes a possibility to limit the charging current using the connector button.

The New Range of Mennekes type IEC62196-2 EVCharge Products 

New products for electric car users: benefit from the charging infrastructure using the Mennekes type IEC62196-2 connectors with cabling. We offer a complete product range for the charging cabling: Plug-In Head, Extension Cable M+F, Car Socket Inlet Panel. Check more details at the EVCharge product section.

The Steca Solarix PI 1100 with LiFePO4 - FAQ

Q: Can the Steca PI 1100 inverters with LiFePo4 batteries?
Yes, the Steca PI1100 inverters were tested with the LiFePo4. The 24V models are designed to be used with a pack of 8 cells (24V).

Q: If batteries are getting empty, when is the load disconnected?The “Safety Low voltage disconnect function” is will disconnect the load when the battery voltage drops down (usually because of discharge). The disconnect level depends on the amount of current. If a high current is being taken from the batteries, the safety disconnect is done later than if the low currents are taken.

Q: What is the disconnecting voltage?
Our tests show following:  with high currents the load is being disconnected at 20.8V per pack, with small currents the low voltages disconnect is between 21.6V to 23.2V,

Q: Should I use the BMS?
Yes. We strongly recommend using the BMS to monitor and protect the cells on the individual cell level. We suggest always to use the BMS as additional safety disconnect at low voltage. In case of failure of the Steca inverter, the BMS would disconnect the battery pack as a protection. See additional information here: why to install a BMS and understanding the BMS operation.

Q: Does the Steca PI 1100 need restarting manually after low voltage fail-safe was activated?
No, the PI1100 inverter does not need a manual restart after the low voltage disconnect. When the voltage at the batteries returns back to the normal level, the inverter will start working again automatically.

The Battery Specialist Training Seminar – March 21st, Prague, Czech Republic

GWL together with the Sinopoly Battery organized a Battery Specialist Training Seminar on March 21st, 2014. The delegates from several countries took part in the training to develop and increase their know-how to become the battery professionals. The training included the presentations, discussions and technology demonstrations. The outline of the seminar here.  GWL and Sinopoly is planning to organize another training perhaps later in 2014.  More details will be available at our web page in the future.

Maxbike Malawi 27.5 a 29 with EVBike Power Kit

RebelBike.com: Another excellent EVBike conversion with the EVBike Central Axis kit

E-bike conversion kit - EVBIKE central axis system 

Get your EVBike! All you need to turn your bike into the electric bike! The conversion kits for Do-It-Yourself installations. The latest system: Central axis pedelec system.