LiveLive
SPX7,655.60-1.8400%IXIC26,044.70-2.8300%FTSE10,748.16-0.2300%GOLD4,522.000.7600%SILVER68.310.7800%PLATINUM1,835.000.4900%PALLADIUM1,352.00-0.2900%BRENT93.442.8300%DJI52,827.65-1.8800%WTI86.502.3700%NDX29,167.69-3.0500%NATGAS2.721.0800%BTC72,832.006.8300%RUT2,990.55-2.0400%VIX16.0012.2800%ETH2,317.0910.8000%DAX25,983.04-1.2000%BNB647.825.0400%XRP1.2315.1500%CAC408,453.09-2.1300%NKY66,216.79-3.6300%DOGE0.089.8900%HSI25,698.491.1900%ADA0.208.5100%NIFTY24,231.85-0.5500%SOL86.915.7900%AAPL314.943.1700%SENSEX77,537.72-0.6000%MSFT482.13-2.9700%TASI10,954.460.2600%IBOV167,854.110.4500%GOOGL340.29-1.7500%TSLA343.020.9000%MERVAL2,860,600.20-4.6700%TSX36,281.98-1.3000%USD/PKR277.290.3200%ASX2009,083.80-1.1400%EUR/PKR323.761.3800%STI5,671.91-0.8400%GBP/PKR378.001.0300%SAR/PKR73.85-0.0300%FBMKLCI1,736.710.5400%AED/PKR75.49-0.0100%SET1,609.990.0100%KOSPI6,852.584.1600%USD/EUR0.86-0.9000%TWSE44,933.74-1.9100%GASOLINE3.02-7.7200%HEATOIL4.38-1.3300%COPPER6.48-1.8900%WHEAT699.503.6700%CORN502.508.0600%SOYBEANS1,236.002.9100%COFFEE328.30-4.8700%COCOA6,012.00-0.5300%SUGAR17.503.7300%COTTON88.595.3800%TRX0.342.0800%AVAX7.1710.0500%LINK10.636.3800%DOT0.837.4400%LTC48.044.7400%SHIB0.007.6500%TON1.382.6200%XLM0.188.3400%HBAR0.073.3800%SUI0.735.6100%APT0.574.8200%UNI3.725.9800%PEPE0.0014.5700%NEAR1.721.6700%ARB0.0910.3500%OP0.099.8300%MATIC0.130.0000%INJ4.706.6500%FIL0.7615.6300%ICP2.344.7900%STX0.000.0000%ETC6.838.6500%ALGO0.096.1400%VET0.019.0300%THETA0.1612.7700%FTM0.03-4.2100%SAND0.046.4200%MANA0.076.9200%AXS0.957.8600%GALA0.0015.3300%CRV0.274.4900%MKR1,423.932.9300%AMZN260.97-1.5700%NVDA216.91-3.7200%META542.23-8.8700%NFLX80.552.9500%AMD464.47-3.8400%AVGO363.81-12.9300%JPM352.62-2.8900%V366.910.4000%MA575.601.5100%XOM167.345.5000%CVX206.154.2700%KO91.194.3100%PEP142.711.4900%DIS107.282.3700%BA215.99-6.2300%BABA129.075.6600%JD29.340.1400%PDD89.306.0900%NIO4.540.8900%SPY764.31-1.7400%QQQ710.34-2.9700%DIA528.68-1.7100%IWM297.55-1.9600%GLD414.443.8800%SLV61.585.8800%TLT82.34-0.3000%HYG79.50-0.3600%LQD106.03-0.4800%XLF57.27-1.7000%XLK183.19-3.9700%XLE63.864.5900%XLV173.793.2100%SMH560.59-4.8400%ARKK83.020.5200%EEM66.42-0.3900%IBIT41.1914.7900%QAR/PKR76.220.2000%INR/PKR2.90-0.3700%JPY/PKR1.740.2100%CAD/PKR201.271.2000%AUD/PKR197.400.8300%NZD/PKR164.911.5100%MYR/PKR68.591.0500%THB/PKR8.440.8200%EUR/USD1.170.9000%GBP/USD1.360.6000%USD/JPY159.05-0.2400%USD/CHF0.80-1.5000%AUD/USD0.710.4200%USD/CAD1.38-0.6100%NZD/USD0.591.5400%USD/INR95.690.3100%USD/CNY6.71-0.4300%USD/HKD7.84-0.0400%USD/SGD1.27-0.6200%USD/KRW1,394.67-1.5700%USD/TRY47.950.1400%USD/ZAR16.14-0.3000%USD/MXN16.96-0.4200%USD/BRL5.19-0.6000%USD/RUB83.740.8100%USD/NGN1,346.21-1.0200%USD/EGP50.831.3100%USD/KES129.400.7900%USD/BDT122.010.7900%USD/LKR329.881.7800%USD/IDR17,774.00-0.5000%USD/THB32.84-0.9900%USD/MYR4.04-1.0700%USD/PHP61.670.5400%USD/VND26,099.000.1100%USD/ILS3.011.5000%USD/SAR3.753.8100%USD/AED3.670.0300%USD/QAR3.643.8500%USD/KWD0.31-0.3900%USD/BHD0.383.1700%USD/OMR0.390.4700%SPX7,655.60-1.8400%IXIC26,044.70-2.8300%FTSE10,748.16-0.2300%GOLD4,522.000.7600%SILVER68.310.7800%PLATINUM1,835.000.4900%PALLADIUM1,352.00-0.2900%BRENT93.442.8300%DJI52,827.65-1.8800%WTI86.502.3700%NDX29,167.69-3.0500%NATGAS2.721.0800%BTC72,832.006.8300%RUT2,990.55-2.0400%VIX16.0012.2800%ETH2,317.0910.8000%DAX25,983.04-1.2000%BNB647.825.0400%XRP1.2315.1500%CAC408,453.09-2.1300%NKY66,216.79-3.6300%DOGE0.089.8900%HSI25,698.491.1900%ADA0.208.5100%NIFTY24,231.85-0.5500%SOL86.915.7900%AAPL314.943.1700%SENSEX77,537.72-0.6000%MSFT482.13-2.9700%TASI10,954.460.2600%IBOV167,854.110.4500%GOOGL340.29-1.7500%TSLA343.020.9000%MERVAL2,860,600.20-4.6700%TSX36,281.98-1.3000%USD/PKR277.290.3200%ASX2009,083.80-1.1400%EUR/PKR323.761.3800%STI5,671.91-0.8400%GBP/PKR378.001.0300%SAR/PKR73.85-0.0300%FBMKLCI1,736.710.5400%AED/PKR75.49-0.0100%SET1,609.990.0100%KOSPI6,852.584.1600%USD/EUR0.86-0.9000%TWSE44,933.74-1.9100%GASOLINE3.02-7.7200%HEATOIL4.38-1.3300%COPPER6.48-1.8900%WHEAT699.503.6700%CORN502.508.0600%SOYBEANS1,236.002.9100%COFFEE328.30-4.8700%COCOA6,012.00-0.5300%SUGAR17.503.7300%COTTON88.595.3800%TRX0.342.0800%AVAX7.1710.0500%LINK10.636.3800%DOT0.837.4400%LTC48.044.7400%SHIB0.007.6500%TON1.382.6200%XLM0.188.3400%HBAR0.073.3800%SUI0.735.6100%APT0.574.8200%UNI3.725.9800%PEPE0.0014.5700%NEAR1.721.6700%ARB0.0910.3500%OP0.099.8300%MATIC0.130.0000%INJ4.706.6500%FIL0.7615.6300%ICP2.344.7900%STX0.000.0000%ETC6.838.6500%ALGO0.096.1400%VET0.019.0300%THETA0.1612.7700%FTM0.03-4.2100%SAND0.046.4200%MANA0.076.9200%AXS0.957.8600%GALA0.0015.3300%CRV0.274.4900%MKR1,423.932.9300%AMZN260.97-1.5700%NVDA216.91-3.7200%META542.23-8.8700%NFLX80.552.9500%AMD464.47-3.8400%AVGO363.81-12.9300%JPM352.62-2.8900%V366.910.4000%MA575.601.5100%XOM167.345.5000%CVX206.154.2700%KO91.194.3100%PEP142.711.4900%DIS107.282.3700%BA215.99-6.2300%BABA129.075.6600%JD29.340.1400%PDD89.306.0900%NIO4.540.8900%SPY764.31-1.7400%QQQ710.34-2.9700%DIA528.68-1.7100%IWM297.55-1.9600%GLD414.443.8800%SLV61.585.8800%TLT82.34-0.3000%HYG79.50-0.3600%LQD106.03-0.4800%XLF57.27-1.7000%XLK183.19-3.9700%XLE63.864.5900%XLV173.793.2100%SMH560.59-4.8400%ARKK83.020.5200%EEM66.42-0.3900%IBIT41.1914.7900%QAR/PKR76.220.2000%INR/PKR2.90-0.3700%JPY/PKR1.740.2100%CAD/PKR201.271.2000%AUD/PKR197.400.8300%NZD/PKR164.911.5100%MYR/PKR68.591.0500%THB/PKR8.440.8200%EUR/USD1.170.9000%GBP/USD1.360.6000%USD/JPY159.05-0.2400%USD/CHF0.80-1.5000%AUD/USD0.710.4200%USD/CAD1.38-0.6100%NZD/USD0.591.5400%USD/INR95.690.3100%USD/CNY6.71-0.4300%USD/HKD7.84-0.0400%USD/SGD1.27-0.6200%USD/KRW1,394.67-1.5700%USD/TRY47.950.1400%USD/ZAR16.14-0.3000%USD/MXN16.96-0.4200%USD/BRL5.19-0.6000%USD/RUB83.740.8100%USD/NGN1,346.21-1.0200%USD/EGP50.831.3100%USD/KES129.400.7900%USD/BDT122.010.7900%USD/LKR329.881.7800%USD/IDR17,774.00-0.5000%USD/THB32.84-0.9900%USD/MYR4.04-1.0700%USD/PHP61.670.5400%USD/VND26,099.000.1100%USD/ILS3.011.5000%USD/SAR3.753.8100%USD/AED3.670.0300%USD/QAR3.643.8500%USD/KWD0.31-0.3900%USD/BHD0.383.1700%USD/OMR0.390.4700%
Thursday, 20 August 2026
GuruAlpha

Battery Life Calculator

Estimate how long a battery lasts given its capacity and the device's power draw.

Battery Life Calculator

Battery Life Calculator

Results

Battery Capacity5,000 mAh
Draw500 mA
Estimated Runtime10 hours
Runtime (85% efficiency)8.5 hours

About the Battery Life Calculator

Battery capacity, charging time and backup duration are the numbers behind every phone, UPS and solar installation in Pakistan. This Battery Life Calculator computes one of these battery figures so your power planning is based on real numbers.

The calculation uses the standard relationships between battery capacity (Ah or Wh), device load, and time — the same math used to size UPS and solar batteries.

With load-shedding still part of life in many areas, battery backup planning matters: how long will a UPS keep a fan and lights running, or how big a battery does a solar system need for overnight power? This calculator answers those questions.

Remember that batteries should not be discharged fully — lead-acid batteries last far longer when kept above 50% charge. Factor that reserve into your planning.

How to use the battery calculator

  1. 1

    Enter the battery capacity and the load it powers.

  2. 2

    Adjust the efficiency or discharge limit if the tool asks.

  3. 3

    Read the backup time or required capacity, updated live.

Frequently Asked Questions

How is battery runtime calculated?

Runtime = capacity ÷ draw. A 5,000 mAh battery feeding a 500 mA device lasts ~10 hours. Real life is a bit lower due to voltage conversion losses.

How long will a UPS battery last?

Divide the battery's usable capacity (in Wh) by the load (in watts). A 150 Ah, 12 V battery holds 1,800 Wh; powering 200 W of fans and lights gives roughly 7–8 hours of backup at normal discharge.

Should I discharge my battery fully?

No — deep discharge damages lead-acid batteries and cuts their life sharply. Keep discharge above 50% for lead-acid; lithium batteries tolerate deeper discharge but still last longer with a reserve.

What is GuruAlpha?

GuruAlpha is a comprehensive digital platform offering live financial markets, free calculators, online tools, Islamic content, SIM packages, sports updates and celebrity profiles for Pakistan, Gulf countries and worldwide audiences.

Is GuruAlpha free to use?

Yes, GuruAlpha is completely free. All calculators, tools, market data, prayer times, Islamic resources and content are available without any subscription or sign-up.

Does GuruAlpha provide live market data?

Yes, GuruAlpha provides live market data including USD/PKR exchange rates, gold prices, cryptocurrency prices, stock market indices and commodity prices sourced from reliable financial data providers.

What calculators are available on GuruAlpha?

GuruAlpha offers over 1,200 calculators including Pakistan income tax, salary tax, PTA mobile tax, electricity bill, gold price, currency converter, Zakat calculator, property tax and many more.

Does GuruAlpha have Islamic prayer times?

Yes, GuruAlpha provides accurate prayer times for over 100 cities worldwide including Fajr, Dhuhr, Asr, Maghrib and Isha times. We also offer Qibla direction, Islamic calendar and Zakat calculator.