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全新Samsung电芯，导体内阻60毫奥以内（真实毫奥表测量结果），化学反应速度的寄生内阻在30毫奥以内，全新时充/放电总内阻不超过90毫奥，于3S2P电池组（10.8V/11.1V，5200mAH），3A放电时仅有小于0.4V即刻降压，性能决对优胜于一般的廉价电芯，即使是那些标榜着3000mAH廉价电芯。容量可高达2546mAH或9.33WHr @ 3.7V（平均电压）每枚电芯。容量都是实际测试，有图为证，决不夸大虚标。电芯由原厂分类，一致性良好，更换后效果佳，不满包换，只在亚替电池企业。09年9月产，长年累积的经验告诉我们，锂离子电芯即使没用，一年可以丧失高达200毫安时/电芯。

Samsung sel terbaru sampai, rintangan dalaman sel dalam 60miliOhm. Muatan sel boleh capai 2546mAH atau 9.33Whr setiap biji. Semua angka didapat daripada ujian komputer seperti yang ditunjukkan pada gambar di bawah, bukannya cakap cakap kosong. Sel telah digolongkan oleh kilang asas, mempunyai sifat sifat kimia yang cukup hampir sama, boleh mencapai keputusan yang bagus selepas menganti, tak puas boleh minta tukar, hanya dibawa kepada anda oleh Alternative Battery Enterprise. Sel-sel ini dibuat pada bulan sembilan tahun ini, mengikut pengalaman kami, Li-ion sel, walaupun tidak digunakan, boleh kehilangan muatan alir elektrik sehingga 200mAH untuk satu sel dalam satu tahun.


六芯电可达5092mAH或56Whr（9.33*6）。

测试条件：
充电：1.25安，4.2伏特/电芯
放电：1.5安，3.0伏特/电芯

6 sel boleh dapat muatan 5092mAH atau 56Whr (9.33*6)

Syarat Ujian:
Caj: 1.25A, 4.2V setiap sel
Nyacaj: 1.5A, 3V setiap sel

〉〉更多详情/Maklumat Lebih/More Details

8.4V Linear Charger

This is an custom-built order from one of my customer a few days back, his UMPC battery is unable to be charged by his notebook. After he have comfirmed that is the UMPC problem, not battery problem, he send it to me to make a custom charger for him. A picture is worth a thousand words.

Picture below: charging a 7.2V li-ion battery pack, the LED will go off when the battery is removed or the charging current is less than 70mA.

Technical Spec:
Type: Linear Series Regulation, Quick Charge Catagory
Maximum Charge Current: 1.1A(+/-5%)
Maximum Charge Voltage: 8.4V(+/-1%)
Input Voltage: 10V-12V
Input Current: 1A
Charging Speed: Reach 70% in 2 hours, 100% in 5 hours (for 2600mAH 7.2V pack)
Fully Charged Indicator: LED, lit up when charging

*No trickle charge mode built in, no suitable for battery that have been drained down to 0%
*This is not a recomended way to charge your battery, although there are built in protection in the pack.
*Not suitable for battery with capacity less than 1000mAH, as the charge pump in rate may larger than the chemical can accept, can result in battery overheat.

Controllable Current Sink/Source Device

Our lab new member, controllable current sink/source device, the picture below show a working prototype.

Technical Spec: -General-
Interface: Fully I2C controllable, seamlessly switch between source and sink
Input Voltage: 16-24V
Current Sense: Gound Side, 20miliOhm sense resistor

-Current Sink Section-
Type: Closed loop current sense, high error amplification gain, fast sinking current correction
Maximum Current Sink: > -4A
Minimum Current Sink: 0mA
Sink Current Stability: Within 5% variation of sink current
Resolution: ~50mA per increasement, up to maximum current sink/sources

-Current Source Section-
Type: Buck Topology, closed loop current sense, bootstrapped high side N-Channel drive
Maximum Current Source: >5A
Minimum Current Source: 0mA, first step is ~200mA
Regulation Stability: Within 5% of output current, variation less than 50mA
Resolution: ~50mA per increasement, up to maximum current sink/sources
Temperature Stability: N/A (not tested)
Bulk Source Efficiency: >90% at 50-60% duty cycle
Transient Response: N/A (not tested, but in the catogory of considered slow
Switching Frequency: 200KHz
Ripple Voltage: less than 1v

Laboratory equipment, suitable to charge/discharge smart battery, can work together with microcontroller through I2C to modify the output current according to the aplication need.