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ADM691A rechargeble battery


ADM691A datasheet figure 21 says  the rechargeble battery.

The input power line is connected to battery line and Vout line in figure 21.

Is this description typo ?

I think that  above connection is not needed  because a recharge is done by  (vout -vbatt/R)  .

And,  in the case of the other product ( for example ADM8690 ) , 

vbatt line and input power line are not connected    in datasheet figure 25 rechargeble battery.

Please let me know yoru advice.