The channel clamps of the two support frames can be connected to {HEAD ~ two lower transverse rods} of {TAIL ~ an existing wheel chair} and the joining tubes at two sides of the battery unit is connected to the joining pipe so that the battery unit can be fixed beneath a seat of the wheel chair 
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The channel clamps of the two support frames can be connected to { HEAD ~ two lower transverse rods } of { TAIL ~ an existing wheel chair } and the joining tubes at two sides of the battery unit is connected to the joining pipe so that the battery unit can be fixed beneath a seat of the wheel chair
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH