Alkaline roj teeb yog ib hom roj teeb uas siv tau uas siv cov alkaline electrolyte, feem ntau yog cov poov tshuaj hydroxide, los siv hluav taws xob me me xws li cov chaw taws teeb tswj, cov khoom ua si, thiab teeb nyem. Lawv paub txog lawv lub neej txee ntev thiab txhim khu kev qha, ua rau lawv muaj kev xaiv nrov rau ntau yam khoom siv hluav taws xob. Thaum siv lub roj teeb, cov tshuaj tiv thaiv tshuaj tshwm sim ntawm zinc anode thiab manganese dioxide cathode, tsim hluav taws xob.

Cov roj teeb alkaline feem ntau yog siv rau hauv ntau yam khoom siv niaj hnub, xws li cov chaw taws teeb tswj, teeb nyem, cov khoom ua si, thiab cov khoom siv hluav taws xob portable. Lawv paub txog kev muab lub zog txhim khu kev qha thiab muaj lub neej txee ntev, ua rau lawv haum rau ntau yam kev siv. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov roj teeb alkaline yuav tsum tau muab pov tseg kom zoo kom txo tau lawv cov kev cuam tshuam ib puag ncig vim qee cov roj teeb alkaline tseem muaj cov khoom phom sij, xws li mercury, hnyav hlau xws li cadmium thiab txhuas. Thaum cov roj teeb no tsis muab pov tseg kom zoo, cov tshuaj no tuaj yeem nkag mus rau hauv av thiab dej, ua rau muaj kev puas tsuaj rau lub ecosystem. Nws yog ib qho tseem ceeb uas yuav tau rov ua dua cov roj teeb alkaline kom tsis txhob tso cov khoom tsis zoo no rau hauv ib puag ncig.

Yog li ntawd, siv cov roj teeb alkaline uas tsis muaj mercury tuaj yeem ua rau muaj kev tiv thaiv ib puag ncig. Mercury yog ib yam tshuaj lom uas tuaj yeem ua rau muaj kev phom sij rau ib puag ncig thiab tib neeg kev noj qab haus huv. Los ntawm kev xaiv cov roj teeb nrog 0% mercury, koj tuaj yeem pab txo qis qhov cuam tshuam tsis zoo ntawm cov khoom phom sij rau ib puag ncig. Tsis tas li ntawd, nws yog ib qho tseem ceeb kom muab pov tseg thiab rov ua cov roj teeb kom zoo kom txo tau qhov cuam tshuam ib puag ncig. Xaiv raumercury-dawb alkaline roj teebyog ib kauj ruam zoo rau kev tiv thaiv ib puag ncig.
Thaum rov siv cov roj teeb alkaline yog qhov muaj txiaj ntsig, nws tseem ceeb heev rau kev tshawb nrhiav lwm txoj hauv kev, kev xaiv zoo rau ib puag ncig, xws li siv cov roj teeb uas siv tau (xws li:AA/AAA NiMH Rechargeable roj teeb,18650 lithium-ion rechargeable roj teeb) los yog nrhiav cov khoom uas siv lub zog siv tau ntev (piv txwv li:muaj peev xwm AAA Alkaline roj teeb,muaj peev xwm AA Alkaline roj teeb). Thaum kawg, kev sib xyaw ua ke ntawm lub luag haujlwm pov tseg thiab kev hloov pauv mus rau lwm txoj hauv kev ruaj ntseg tuaj yeem ua rau muaj kev tiv thaiv ib puag ncig.