ZCell 101: Battery Basics

ZCell University 101: Battery Basics

1. Understanding Your Battery

a. When looking at a battery we must keep in mind that it is electrochemical. It’s a vessel that is slow to fill, holds relatively little storage capacity and has a defined life span. As there are not perfect spouses in marriage, nor ideal employees in a company, so also batteries have strengths and weaknesses. Manufacturers can build a low-cost battery that provides a long run-time, but the service life is short. Another design addresses high load capabilities, but the pack gets bulky. A third variety offers extended life, but the battery grows heavy and gets expensive. All batteries have one thing in common: they run for a while, need charging and then eventually die.

2. How Lithium-ion Batteries Work

a. Charging and discharging batteries is a chemical reaction, but Li-ion is claimed to be the exception. Battery scientists talk about energies flowing in and out of the battery as part of ion movement between anode and cathode. The lithium-ion battery works on ion movement between the positive and negative electrodes. In theory such a mechanism should work forever, but cycling, elevated temperature and aging decrease the performance over time. Manufacturers take a conservative approach and specify the life of Li-ion in most consumer products between 300 and 500 discharge/charge cycles.

3. Laza Zcell Batteries

a. Laza brings you accurately rated batteries that feature high capacity, top quality and more charge cycles. Zcell powered batteries are exclusive to Laza and lead the way in quality batteries and longer run times than other brands. Zcell Powered Battery manufactured and tested for accurate capacity. While other brands claim to have high capacity batteries, Zcell batteries are accurately rated. While other brands skimp on power, Zcell batteries deliver as promised.

4. ZCell vs Competitiors

a. Manufacturers tend to overrate their batteries; knowing that very few customers would complain. This opens the floodgate for a much broader performance acceptance range. Many lower-performing cells may go unnoticed by the consumer.

b. Here at Laza we work with our manufactures to ensure the highest quality Zcells are used in our batteries to provide high capacity and more charge cycles.

5. Getting the most out of your Zcell Battery: DO’s and Don’ts

a. Do’s

i. Priming Your Battery

1. Not all rechargeable batteries deliver the fully rated capacity when new and require priming.

2. Priming is a conditioning cycle that is applied as a service tool to improve battery performance during usage or after prolonged storage.

3. We recommend at least five full charge cycles to gain full capacity. We suggest using your battery until 10-20% remains. Then charge your phone overnight to full capacity. Repeat this five times.

4. Users have reported some capacity gains by cycling after a long storage.

b. Don’ts

i. Heat Exposure

Lithium-ion suffers from stress when exposed to heat, so does keeping a cell at a high charge voltage. A battery dwelling above 30°C (86°F) is considered elevated temperature and for most Li-ion. Exposing the battery to high temperature and dwelling in a full state-of-charge for an extended time can be more stressful than cycling.

Table 3: Estimated recoverable capacity when storing Li-ion for one year at various temperatures

Elevated temperature hastens permanent capacity loss. Not all Li-ion systems behave the same.

0°C

25°C

40°C

60°C

98%

96%

85%

75%

94%

80%

65%

60%
(after 3 months)