WB-LYP400AHA LiFeYPO4 (3.2V/400Ah)

Manufacturer: GWL/Power
Art.#: LFP400AHA
497.28$List price:
Individual pricing for large scale projects and wholesale demands is available.
Contact us:
phone: +420 277 007 550
email: export@gwlpower.cz




Stock status : More than 50 pcs.
Shipping weight: 17.81 kg
High power lithium cell, original Winston Battery product with LiFePO4 (LiFeYPO4) technology. Capacity: 400Ah, size: 285x460x65 mm, weight: 13.7 kg. Model: WB-LYP400AHA(B)

Technical information


Complete datasheet
Original ThunderSky Winston part number: WB-LYP400AHA
Recommended initial and subsequent charging is to 3.65 V.
The minimum voltage is 2.5 V.
Maximum discharge current is 3C continously.
Operating temperature -45°C up to 85°C (discharging)
Capacity density is 88.9 Ah/kg


These battery cells are suitable for all traction applications including electric vehicles. Fully complies also for stationary applications - such as energy storage.
There is no Selfdischarging effect.
Can be recharged at any state of discharge - no memory effect
LiFePO4 is a very safe technology, not spontaneous combustion, does not react with moisture or with oxygen.
All cells are supplied new directly from the manufacturer.
Original Woodenbox contains 6 cells is 543*509*425mm large and weights 90kg.

User ManualPlease read USER MANUAL before use.
FAQDo you have technical question? Try KNOWLEDGE BASE.


Size of packs using 400Ah cells


8 cells, 24V
Total capacity 9.6 kWh / Depth 520 mm / Weight 108 kg

16 cells, 48V
Total capacity 14,4 Wh / Depth 1040 mm / Weight 216 kg

1 cell:
Capacity 1.2 kWh / Depth 65 mm / Weight 13.5 kg

4 cells, 12V
Total capacity 4.8 kWh / Depth 260 mm / Weight 54 kg

cell400sch1 cell400sch2



Initial, first time charging


LiFePO4 chargers

Cells are precharged from manufacturer to conservation charge (usually 30-50%).
The cells have to be charged with low current before the first use.
The first charge should not exceed 0.5 C - eg for 400Ah cell is 200A.
FAQ: Initial charging information

For initial charging of multiple cells, connect them in parallel and the charger outputs should be connected to both ends of the parallel rows of cells, exactly as it is described here:
FAQ: The initial charging of the number of cells

We recommend to use chargers specially made for LiFePO4 cells First charge and initial balancing of the whole pack is important step towards long lifetime.

Alternatively you can use regulated (Laboratory) Power supply as initial charge tool. Short description how to proceed.



Balancing and protection


Demonstration video of BMS123 Smart assembly



Important part of each battery pack is balancing and protection electronic. Most frequent solution is BMS123 Smart. This Advanced solution for battery monitoring and management of LiFePO4 cells support Bluetooth connection with your phone, iPad, tablet or other device. Free Android and iOS application included.


BMS123 Set for LiFePO4 cells


Common connection diagrams for BMS,SBM


BMS123 Smart connection demonstration including Charger, Appliance and the ever important fuses and switches.

BMS123 connection diagram

SBM is simple solution offering basic protection, diagram shows 16 cell version connected with charger and fuses.

SBM conection diagram


Connecting the cells


Winston produce cells with easy to assemble square shape, terminals are made for screws allowing simple installation with spanner.

Interconnection between cells is important part of any battery pack. Original copper connectors are made of several thin layers for ideal flexibility and conductivity.
Make sure to clean oxidation from both, terminals and connectors (with Sandpaper or similar) before assembly. Oxided contacts may have very high resistance and cause unbalancing of the battery.

Plastic caps are cheap solution to prevent unwanted shortcuts and for easy plus and minus marking (red and black colors are available).

LiFePO4 Terminal connectors and plastic caps

Demonstration video of cell assembly

IEC62133-2:2017
Weight (kg) 13.5
Height (mm) 285
Width (mm) 461
Depth (mm) 65
Nominal Voltage (V) 3,2
Capacity (Ah) 400
Max discharge current (A) 4000
Optimal discharge current (A) 200
Max charging current (A) 1200
Optimal charging current (A) 200
WB-LYP400AHA LiFeYPO4 (3.2V/400Ah) High power lithium cell, original Winston Battery product with LiFePO4... 497.28$
24 visitors online.
All Rights reserved © 2018 EVPower a.s.