Blog - Tests and diagnosis

Example of discharge of 20Ah cells at 360A (18C)

Example of discharge of 20Ah cells at 360A (18C)

The graph shows discharge characteristics of 12V batteries using 20Ah cells at 360A. This high current is used to start the gasoline engine.

SOC vs Temp

SOC vs Temp

The State of Charge (SOC) versus Temperature (*C) for CALB 180AH cell. .

FAQ: Questions on charging LFP cells

Q: I am using a new laboratory Power Supply (PS). This PS is able to charge to a max. of 30 Volts and a current of max. 10 Amp. What I do is setup the PS to 4 Volts and 3 Amp. At the end of the charging, the PS automatically reduces the current to 0.01 Amp.

This is 100% correct. For large capacity cells (

CellLog 8S - latest firmware - V208 - download

CellLog 8S - latest firmware - V208 - download

Please download the latest firware for the CellLog 8S - version 2.08 -

Can a battery be charged when being discharged?

Can a battery be charged when being discharged?

Answer: If the charging current is higher than the discharge current, it is possible to charge the battery when being under load. When charging the charging current will be first consumed by the load and only the current in extra will be used

LP 12V/20A – customer reference – 530 cycles

LP 12V/20A – customer reference – 530 cycles

I am using LiFePO4 batteries for 1.5 year in a cyclic use. The energy drop after 530 cycles is in average about 2 percent. The batteries have always had higher capacity than given by the manufacturer. At this time they still have highe

FAQ: What is the capacity of a SuperCap?

FAQ: What is the capacity of a SuperCap?

The calculation is showed in the picture. For a 6000 F capacitor working with 2.5V nominal voltage, the total energy is 5.2 Wh. Divided by the discharge voltage of 2V, the capacityis 2.6 Ah.

The Result: 6000 Farad SuperCap at 2.5V has about 2.6 Ah capacity. To make a 12V 40Ah S

Discharge of 90AH and 100AH batteries - Test Report at 220A...

The PCM circuit of the LFP batteries cannot replace proper...

The PCM circuit of the LFP batteries cannot replace proper fusing

Recently there were several cases of customers who damaged the LFP batteries with the PCM by over current or short-circuit. As any batteries, the batteries with the PCM protective board need to be fused by a proper size fuse. In

Discharge of 90AH and 100AH batteries - Test Report at 102A...

Discharge of 90AH and 100AH batteries - Test Report at 102A (1C)

The test report shows the discharge characteristics of Winston 90AH, Winston 100AH, CALB 100AH at 102A discharge currents (1C). Download