Google will invest, build and operate such mobile communication networks in sub-Saharan Africa and Southeast Asia, with the goal of helping 1 billion users access the Internet. As part of the plan, Google is building an ecosystem of cheap Android smartphones that will use low-power processors. Unlike traditional mobile communication networks, Google will use high-altitude platforms such as balloons and airships to cover hundreds of square miles of signals.
Google Airship
Google is also considering using satellites to achieve the same goal. The source said that no one technology will fit all markets. A Google spokesperson declined to comment on the news.
At the same time, Google is lobbying regulators in developing countries to use the spectrum of TV broadcasting. This spectrum has a low frequency and can bypass obstacles such as buildings, making the signal propagation distance much greater than WiFi technology.
Google is conducting small-scale tests in Cape Town, South Africa. Google ’s software can detect which TV broadcast spectrum is currently unused and can be used for mobile communications. Google said in its official blog that this technology is very suitable for providing low-cost networking services to rural areas with weak telecommunications infrastructure, while also strengthening wireless broadband coverage in densely populated urban areas.
DC (AGM Deep Cycle) series is specially designed for frequent cyclic discharge.
By using strong grids and specially designed active material, the DC series battery offers 30% more cyclic life than the standby series.
1. Long shelf life
It can be stored for a long time period and no need to recharge during storage. Battery left-over capacity can be as high as 70% after being stored for 1 year and can be restored to 85% of its full capacity when fully recharged.
2. Over-discharge performance under low voltage
This battery can be restored to 80% of its full capacity while others only being rendered to failure because of the sulfuration of the sulfur-acid and its consequent maintenance, after subject to a long period of repeated over-discharging due to frequently engine igniting, lighting and insufficient charge for the battery caused by short-distance driving and low speed.
3. Over-discharge performance under high voltage
Being charged at 16V(not recommended, though, this battery can be as high as 95% of its full capacity, no drying up in the electrolyte due to little gas releasing and all released gas being absorbed by the plates, while this kind of sealed lead-acid battery usually being charged by an external 14.8V charger which is designed with different emphasis between amperage and voltage(because the charge voltage for flooding lead-acid battery is usually at 16V, so the prevalent charge voltage is 16V, it will be soon rendered useless caused by drying out of the electrolyte if the ordinary battery being charged by a 16V external charger.
4. Quick charge acceptance
This battery can quickly absorb the momentary charging energy generated by vehicle _borne generator and braking, the testing date shows that it can absorb 70% of the energy released while others only 40%, after being charged under this kind of condition for 1 hour.
5. High multiple rates starting performance
Small in internal resistance and self-discharge, normal temperature starting discharge multiple rates can be as high as 8C20 while other ordinary battery can only reach 6C20, so this battery can be used to substitute high power battery.
6. Super long life span
This battery's life span is twice as long as ordinary battery's due to its slow capacity attenuate rate under repeated deep discharge cycles.
7. Super long life span Battery's consistency
The consistency and balanced discharge performance rendered special match for battery working group unnecessary and only need to replace the damaged one in case there is any, thus speeding the responsiveness of post-sale service.
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Starlight Power Industrial Company Limited , https://www.starlite-power.com