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Vous voyez sur quoi je suis assise ?

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C'est le sujet de cet épisode
de R&D Africa avec AAU TV.

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Nous allons vous parler du jeune
Lawrence Adjei, qui a inventé

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ce vélo électrique utilisant des
batteries de portable usagées.

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Restez avec nous, la suite arrive.

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A une époque où l'environnement,
la santé et le tourisme vert

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intéressent de plus en plus de monde,

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quel moyen de transport permet

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de réduire les embouteillages,

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de rester écolo et de
respecter l'environnement ?

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Les vélos électriques sont des vélos
équipés d'un moteur électrique

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qui aide au pédalage, voire le remplace.

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Ils offrent nombre d'avantages.

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Ils consomment peu, sont rapides,
réduisent les embouteillages

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et sont globalement non polluants.

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Les inventeurs utilisent surtout
des accumulateurs de type lithium-ion,

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nickel-cadmium,

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lithium-cobalt,

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plomb-acide,

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nickel-hydrure métallique,

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lithium-manganèse

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et des accumulateurs lithium-ion-polymère.

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Un jeune Ghanéen, Lawrence Adjei,

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est responsable de plusieurs innovations
dans le domaine des vélos électrique.

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Pour ses vélos, il utilise des
batteries d'ordinateurs portables

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qu'il achète chez des ferrailleurs et 
dans des boutiques d'informatique à Accra.

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C'est le premier Ghanéen
à avoir conçu des vélos électriques

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utilisant des batteries de portables
et il est autodidacte.

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Je suis proche de Lawrence
et je lui sert d'assistant.

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Ce n'est pas ma première fois.

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Cela fait deux ans que je fais du vélo.

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La sensation est différente.

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Différente. On ne même peut pas comparer 
parce que sur un vélo normal...

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...on souffre.

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On reste sidéré devant le nombre
de kilomètres à parcourir.

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Alors, c'est vraiment différent de 
tous les autres vélos que j'ai utilisés.

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Celui-ci a trois vitesses,
contrairement aux autres.

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Il a un frein qui charge la batterie lors
du freinage, contrairement aux autres.

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Il a un port USB pour
charger son téléphone

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ou utiliser une lampe à vélo USB.

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Contrairement aux autres.

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Il a aussi une sonnette,
les autres n'avaient pas de sonnette.

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Et puis les freins arrêtent le vélo net.

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On s'arrête direct.

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Ensuite. Concernant la batterie,

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elle a une forte autonomie,
suffisamment même

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pour éclairer une maison.

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C'est ici que M. Lawrence Adjei
fabrique toutes ses inventions.

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C'est là qu'il fabrique
des vélos électriques

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avec des batteries de portables usagées.

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Je suis actuellement ici avec M. Lawrence.

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Expliquez-nous comment vous utilisez

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ces batteries pour transformer
des vélos en vélos électriques.

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Alors, on a une batterie.

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On l'ouvre comme ça.

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Parfois on la tord, ou...

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on utilise une pince.

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D'accord.

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Vous voyez qu'on n'utilise
pas toutes les batteries.

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Regardez, là, au bout.

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- D'accord.
- On ne peut rien en faire,

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il en faut une autre.

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Essayez une autre.

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Pareil.

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Celle-là, ça va. On enlève,
disons, la carte mère

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- de la batterie.
- D'accord.

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On enlève ça...

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[Inaudible]

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Puis on enlève les accumulateurs comme ça.

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D'accord.

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Au total, il vous en faut combien ?

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Beaucoup, mais

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je n'ai que 6 accumulateurs ici.

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D'accord.

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